15=x+-2

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Solution for 15=x+-2 equation: 



15=x+-2

We move all terms to the left:

15-(x+-2)=0

We add all the numbers together, and all the variables

-(x-2)+15=0

We get rid of parentheses

-x+2+15=0

We add all the numbers together, and all the variables

-1x+17=0

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

-x=-17

x=-17/-1

x=+17

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