5x-15=7x+7

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Solution for 5x-15=7x+7 equation: 



5x-15=7x+7

We move all terms to the left:

5x-15-(7x+7)=0

We get rid of parentheses

5x-7x-7-15=0

We add all the numbers together, and all the variables

-2x-22=0

We move all terms containing x to the left, all other terms to the right

-2x=22

x=22/-2

x=-11

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