- anonymous

Solve for x: 4 over 5 x + 4 over 3 = 2x
x = __________________ Write your answer as a fraction in simplest form. Use the "/" symbol for the fraction bar.

- katieb

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- anonymous

halp

- anonymous

like this?\[\frac{ 4 }{ 5x } +\frac{ 4 }{ 3 } = 2x\]

- anonymous

I guess, it says solve for x

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## More answers

- anonymous

i know solve for x, but we need to get the equations right first

- anonymous

oh right lol, sorry im like so out of it when it comes to math
Its
x=4/5 x + 4/3 = 2x

- anonymous

the x is separate

- anonymous

ok lets multiply by 3 on both sides to remove the denominator on the 4/3

- anonymous

\[(3)\frac{ 4 }{ 5x } + (3) \frac{ 4 }{ 3 } = (3)2x\]

- anonymous

2.4 x + 4 =6x
is that right?

- anonymous

where did you get the 2.4x?

- anonymous

3 times 4/5

- anonymous

its 3 times 4/5x

- anonymous

12/5x you cant just pull the x out

- anonymous

i told you that the x was separate though

- anonymous

\[\frac{ 4 }{ 5 }x\]

- anonymous

like this?

- anonymous

ye

- anonymous

\[2.4x + 4 = 2x\] now minus 2x from both sides

- anonymous

0.4x + 2x

- anonymous

or
0.4 + 2x = 2x

- anonymous

\[2.4x + 4 -2x = 2x - 2x\]

- anonymous

so would 2x -2x or just 2x be the answer..?

- anonymous

solve that chunk first

- anonymous

2x-2x is definitely 0

- anonymous

XD ye ik
i got 4.4?

- anonymous

2.4x-2x =?

- anonymous

well that would be 0.4 but i added the 4 cuz u said it up there

- anonymous

its 2.4x + 4

- anonymous

not 2.4x +4x

- anonymous

you can't add the variables and the constants together

- anonymous

ok then 6.4?

- UsukiDoll

"you can't add the variables and the constants together
"
leave it as 2.4x + 4

- anonymous

2.4x + 4

- anonymous

2.4 is a coefficient not a constant term

- anonymous

so we now have \[0.4x + 4 = 0\]

- anonymous

so that would be the final answer?

- UsukiDoll

ick decimals... I would multiply the whole equation by 10 and then solve for x

- anonymous

yes multiply by 10

- UsukiDoll

decimals are evil. we use multiplication to modify the equation and make life easier.

- anonymous

hint: calculator doesn't care about decimals

- anonymous

waddaya got?

- UsukiDoll

ghostbusters.

- anonymous

you seen the goat balls yet?

- UsukiDoll

ya ._,

- anonymous

lel

- anonymous

Um...so the answer is..0.4x + 4 = 0 also, goat...wtf...

- anonymous

correct?

- UsukiDoll

gotta solve for x =_= that's just an equation

- anonymous

thats not your final answer

- anonymous

show it to him if he didn't finish it in 10mins

- UsukiDoll

k/

- UsukiDoll

so first we multiply the entire equation by 10 because dealing with decimals (especially by hand) is torture
0.4x + 4 = 0
(10)(0.4x)+4(10)=0(10)
4x+40=0
now we need x by itself. We don't want that 40 on the left side, so subtract 40 on both sides
finally divide both sides by 4

- anonymous

\[4x + 40 =0\]\[x + 10 -10 = 0 - 10\]

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