-3x-15=-x-7

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Solution for -3x-15=-x-7 equation: 



-3x-15=-x-7

We move all terms to the left:

-3x-15-(-x-7)=0

We add all the numbers together, and all the variables

-3x-(-1x-7)-15=0

We get rid of parentheses

-3x+1x+7-15=0

We add all the numbers together, and all the variables

-2x-8=0

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

-2x=8

x=8/-2

x=-4

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