-x-15=2x+6

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Solution for -x-15=2x+6 equation: 



-x-15=2x+6

We move all terms to the left:

-x-15-(2x+6)=0

We add all the numbers together, and all the variables

-1x-(2x+6)-15=0

We get rid of parentheses

-1x-2x-6-15=0

We add all the numbers together, and all the variables

-3x-21=0

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

-3x=21

x=21/-3

x=-7

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