Someone good with math

[ArjayBarron]

oo never mind i got help =D

[emorexic-pimp]

this really doesnt go here (i know you know that..)

cross multiply:
2-2*5x=4*3x = 10x-10x=12x

10x-10x cancels itself out leaving you with 12x
you need to make 12*x=0
x=0

[Colonel Mcmuffin]

emorexic-pimp

this really doesnt go here (i know you know that..)

cross multiply:
2-2*5x=4*3x = 10x-10x=12x

10x-10x cancels itself out leaving you with 12x
you need to make 12*x=0
x=0

I think that's wrong.

[Colonel Mcmuffin]

RJ_Barron

Hey i know this is off topic but there is not a forum for this, so i figured i would go here because the people of the gd are to immature to help.

Ok so i am not very good at math, and therefore i am stuck at this problem, I'm sure if i had someone to explain it it would be easier.
its a multiple choice question but i will not give the answer that way i will truly know that you answered correctly.

so can someone please assist me on this problem and explain how you did it, it would be much appreciated.

ok so the problem:

2-2/3x=4/5x

Multiply the entire equation by x, then divide the whole think by 2. After that it should be pretty simple.

[emorexic-pimp]

it could be...
let me re-think for a second
wait... are we working with fractions?
cuz thats what i did that math based on

[Zahmira]

2 - [2/3]x = [4/5]x

the numbers in the [] being fractions? Just gather your x's on one side of the equation and non-x's on the other.

2 = [4/5]x + [2/3]x

Do your addition, then divide both sides by whatever is in front of the x to isolate it.

[Lily-Anne-Marie]

Not quite. What you need to do first is get all the x variables on one side by itself. So you need to multiply both sides by 3x to get it out of the denominator on the left side of the equation.

2-2/3x = 4/5x
2-2/3x*3x = 4*3x/5x*3x
2-2= 12x/15x^2

Then what you need to do is simplify it down.

2-2 = 12x/15x^2
0 = 12x/15x^2 Here you can combine the x's on the right side. When dividing fractions and you have a variable, you need to subtract the exponents.
0 = 12/15x^-1 because 1-2 = -1
Simplify it down even further by dividing by 3 on both top and bottom.

0 = 4/5x^-1

[ArjayBarron]

oh dear sweatdrop ... none of these are correct so far. confused

[ArjayBarron]

oh and yes these are fractions.

[Zahmira]

I think there is some confusion over how you have formated the equation and we are all interpreting it differently.

[ArjayBarron]

ok here a little more clearly

2-[2/3x]=[4/5x]

inside the [ ] are fractions.

or for word.

two minus two-thirds x equals four-fifths x

[~Rzx~282~]

I'm working on it. Just give me a minute, I've almost finished hopefully solving it.

[Firiona]

The question is also if the x is in the denominator or numerator.

[ArjayBarron]

ooh i hope you read this before you go through the trouble but i got a pm with the correct answer and explaining it, thanks everybody for the help though =D

[~Rzx~282~]

2 - 2/3x = 4/5x
2 - [2/3x * 3/3] = [4/5x * 3/3]
2 - 6/15x = 12/25x
2 [- 6/15x + 6/15x] = [12/15x + 6/15x]
2 = 18/15x
2 = 1 3/15x
2 = 1 1/5x
2 = 6/5x
2 ^ 6/5 = 6/5x ^ 6/5
12/10 = X