Posted by **Justine** on Saturday, May 1, 2010 at 10:00pm.

Can you please see if you got the same answer as I did? Thank you.

3/x + 2/x-4

3x-12=2x

subtract 3x from both sides you get -12=-1x divide by -1 final answer is 12.

- Math Check -
**Reiny**, Saturday, May 1, 2010 at 10:06pm
yes, the solution to 3x-12=2x

is x = 12

but ...

how did 3/x + 2/x-4

magically turn into the equation

3x-12=2x ????

- Math Check -
**Justine**, Saturday, May 1, 2010 at 10:11pm
I multiplied each fraction by (x)(x-4)

- Math Check -
**Reiny**, Saturday, May 1, 2010 at 10:39pm
you must have had

3/x = 2(x-4)

cross-multiplying would have given you

3x - 12 = 2x

ok, looks like a simple typo.

- Math Check -
**j**, Monday, May 3, 2010 at 8:46pm
3/x+ 2/x-4 = 3(x-4)+ 2(x)=0

3x-12+2x=0

3x+2x=12

5x=12

x=12-5

x=7

or only if you cross multiply the 3*x-4 which is 3x-12 and put it equal to 2*x which is 2x that could work.

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