What is the answer?

[BHKrystal06]

What is the answer?

4x-3x+2(23+67)-12+4 / 3

[mwynn05]

hmm im not sure i did it right i got x+168.333....im glad i dont have math any more are you in algebra 2 or pre-cal

[BHKrystal06]

Algebra 2

It's x + 57 1/3...I figured it out.

[Owen B]

The answer is:

Do your own homework, girl! :)

[JasperDog94]

What is x?

[jason]

4x-3x+2(23+67)-12+4 / 3
= 4x-3x+2(90)-12+4 / 3
= 4x-3x+180-12+4 / 3
= x+122 / 3
= 122x / 3

one step farther: x=40.7

[mwynn05]

oh crap your right you can multiply by x but you can add or subract non x digits i did do it WAY wrong....

[pixie06]

x= 179.33

[Phil C]

The answer is -24 4/21. I can show you step by step if you need Bk. I minored in math in college BK. I can show you step by step if you want. I also taught high school algebra before I went into accounting. I could still be wrong but plug those numbers in for x and I think you see I am right.

[JasperDog94]

Originally posted by jason

= x+122 / 3
= 122x / 3
sorry but x + 122 / 3 doesn't go to 122x / 3.

[JasperDog94]

You can't tell what "x" is in this equasion. All you can do is simplify the equasion. There's no = sign so you can't determine what "x" is.

[jason]

Originally posted by JasperDog94
sorry but x + 122 / 3 doesn't go to 122x / 3. well i was wondering if it was all one long equation? or if it is the first part all divided by 3....like a fraction...the space she put in there confused me

so i did it as if it were written like this:



4x-3x+2(23+67)-12+4
3

[Owen B]

Krystal, your answer is incorrect, as are all above this post. Jasper-dog's post is correct, except that "equasion" should be "expression."

Your mistake is in simplifying 168 + 4/3.

[Phil C]

4x + 3x +2(27+67)-12 + 4/3 = 0

7x + 2(90) -12 +4/3 = 0

7x +90 -12 + 4/3 = 0

7x + 168 + 4/3 = 0

now 4/3 = 1 1/3

so 7x + 168 + 1 1/3 = 0

7x + 169 1/3 = 0

subtract 169 1/3 from both sides of the equation

7x + 169 1/3 = 0 - 169 1/3

7x = -169 1/3

now 169 1/3 = 508/3 you multiply in numerator 169x3 and add the 1. Let me know if you are unable to follow this.

so 7x = -508/3 don't forget that minus sign :)

Now divide both sides of the equation by 7 and you get

7x/7 = -508/(3x7)

so x = -508/21

x = -24 4/21 if you multiply 24 x 21 you get 504 and since it
it is 508 you have a remainder of 4 (508-504)

Hope you were able to follow it. :) It has been a long time since I taught the school so I don't know if there are new techniques.

[pixie06]

4x-3x+2(23+67)-12+4/3
4x-3x+2(90)-12+4/3
4x-3x+180-12+4/3
x+180-12+4/3
x+168+4/3
x+172/3
x+57.33

[jason]

its 4x - 3x not 4x +3x

[jason]

Originally posted by pixie06
4x-3x+2(23+67)-12+4/3
4x-3x+2(90)-12+4/3
4x-3x+180-12+4/3
x+180-12+4/3
x+168+4/3
x+172/3
x+57.33 somebody please the order of operations to this girl...and that you dont just work these left to right...

[Owen B]

pixie06 wrote:

4x-3x+2(23+67)-12+4/3
4x-3x+2(90)-12+4/3
4x-3x+180-12+4/3
x+180-12+4/3
x+168+4/3 (correct to here)
x+172/3 (incorrect)
x+57.33

[Phil C]

The check. Remember you have as x = -24 4/21

now we know from above 24 4/21 = 508/21 so therefor we have

4(-508/21) + 3(-508/21) + 2 (23+67) - 12 + 4/3 = 0

7(-508/21) + 2(90) -12 + 1 1/3 = 0 remember 4/3 = 1 1/3

remember 7 goes into 21 three times so

-508/3 + 180 -12 + 1 1/3 = 0

so -508/3 + 168 + 1 1/3 = 0

-508/3 + 169 1/3 = 0

now 508 divided by 4 = 169 r 1 so it is 169 1/3 (don't forget negative sign now :)

so you have -169 1/3 + 169 1/3 = 0

and so 0 = 0 It checks out!!! :)

Horay for the Sinton GodFather!! :)

[Ranger Mom]

Now I remember why I absolutely HATED Algebra!!!!

So who is right, Owen B or Phil C??

Inquiring minds want to know!!

[Phil C]

Was that edited. if it is 4x - 3x that makes it a very simple problem. I would have sworn it was originally 4x + 3x. Others seem to have made the same error so methings some editing was done.

[Phil C]

That would make the answer - 169 1/3 if it was 4x - 3x. very simple that way

[Phil C]

Owen you were correct up to

168 + 4/3 but then you add 168 + 1 1/3 you would get 169 1/3 and when you subtract both sides of the equation you would get

- 169 1/3.

I thought that problem was harder than it seemed with the + 3x.

[Owen B]

Phil, you correctly simplified the expression. The problem is, you added "= 0" to the right of the original problem, making it an equation to be solved for x, rather than an expression to be simplified. If it were an equation, your answer would be correct.

[Owen B]

Originally posted by Phil C
Owen you were correct up to

168 + 4/3 but then you add 168 + 1 1/3 you would get 169 1/3 and when you subtract both sides of the equation you would get

- 169 1/3.

I thought that problem was harder than it seemed with the + 3x. I didn't make that mistake. I pointed out, in parentheses, where pixie had made a mistake.

My intent was not to give the answer, but to help the girls figure it out for themselves, with guidance.

[jason]

ok my turn:

if train A leaves tokyo, japan at 4am their time and heads west, and train B leaves forney, texas at 4 am our time and heads east...when/where do they meet?

[Phil C]

Hey Owen. Is this some new math or maybe in my old age I am missing something. Maybe it has been changed since I taught yearn ago. But one thing for sure. I think BK gave us the wrong problem because I noticed she had edited the post. I guess Jason had it right when he had x + 169 1/3. Owen can you give me a review on what it means to simplify. would you have it

3x /3 + 508/3 = (3x + 508)/3 ?

[BHKrystal06]

Originally posted by Phil C
I think BK gave us the wrong problem because I noticed she had edited the post.

I did NOT edit the problem. I edited what I wrote below it.

[mwynn05]

Originally posted by jason
ok my turn:

if train A leaves tokyo, japan at 4am their time and heads west, and train B leaves forney, texas at 4 am our time and heads east...when/where do they meet? just shut up lol

[Keith7]

X=69

[Keith7]

Originally posted by jason
ok my turn:

if train A leaves tokyo, japan at 4am their time and heads west, and train B leaves forney, texas at 4 am our time and heads east...when/where do they meet?

how fast are the trains going?

[jason]

train A is traveling approximately 83 km/hr and train B is traveling at approximately 75 m/ph

[PPHSfan]

Originally posted by jason
ok my turn:

if train A leaves tokyo, japan at 4am their time and heads west, and train B leaves forney, texas at 4 am our time and heads east...when/where do they meet?

They meet at the scene of the accident, and not a minute sooner. Providing they don't drown in the Pacific Ocean.

[jason]

Originally posted by PPHSfan
Providing they don't drown in the Pacific Ocean. :clap: :clap: :clap:

[Old Tiger]

Originally posted by BHKrystal06
Algebra 2

It's x + 57 1/3...I figured it out. wow you take algebra 2 also? we have a common interest :p :cool:

[mwynn05]

i think shes in honors bc we didnt do this until like the 4th or 5th week of school

[Old Tiger]

I don't know what were doing....lol....I just sit in there and write what the teacher writes down.

[Bandera YaYa]

My answer is: THANK GOD I DON'T HAVE TO EVER FIGURE THIS KINDA MATH OUT EVER AGAIN IN MY LIFE TIME!!!!!! :D :D :D

[BIG BLUE DEFENSIVE END]

Originally posted by Phil C
That would make the answer - 169 1/3 if it was 4x - 3x. very simple that way
That's what I got, too, Phil. :cool:

[crabman]

How could all of you forget the basic rules of math????

Please
Excuse
My
Dear
Aunt
Sally

This establishes the order you do the functions in.

Parentheses
Exponents
Multiplication
Division
Addition
Subtraction

Do every function in this order and the answer will appear.

[Keith7]

Originally posted by PPHSfan
Providing they don't drown in the Pacific Ocean.

If they drowned in the pacific ocean they would have already have passed eachother.. they mgiht drown in the atlantic though

[BHKrystal06]

Originally posted by Tiger WR
I don't know what were doing....lol....I just sit in there and write what the teacher writes down.
I don't really pay attention, I just talk to all the guys sitting around me...lol...

And I'm not in honors Algebra 2.

[Owen B]

Originally posted by Phil C
Hey Owen. Is this some new math or maybe in my old age I am missing something. Maybe it has been changed since I taught yearn ago. But one thing for sure. I think BK gave us the wrong problem because I noticed she had edited the post. I guess Jason had it right when he had x + 169 1/3. Owen can you give me a review on what it means to simplify. would you have it

3x /3 + 508/3 = (3x + 508)/3 ?

It’s not new math and you didn't miss something. What you did was to ADD something to the problem that is not part of the problem. You added “= 0” to the end and assumed that the student was to solve the resulting equation for x. But the problem is to simplify the expression “4x-3x+2(23+67)-12+4/3,” not to solve the equation “4x-3x+2(23+67)-12+4/3=0.”

Both Krystal and pixie correctly simplified the expression to x + 168 + 4/3. Both of them then made the same mistake. They treated 168 + 4/3 as (168 + 4)/3.

[crabman]

See my previous post. Division comes before addition.

[Owen B]

crabman, what you say is correct, but irrelevant to anything I have said. Both Krystal and pixie correctly got as far as I said and then made the mistake I said they made.

[Phil C]

Next problem! lol

[bullfrog_alumni_02]

Originally posted by BHKrystal06
I don't really pay attention, I just talk to all the guys sitting around me...lol...

And I'm not in honors Algebra 2. uh oh, jason has some competition :D j/j