-15=a-(-2)

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Solution for -15=a-(-2) equation: 



-15=a-(-2)

We move all terms to the left:

-15-(a-(-2))=0



We calculate terms in parentheses: -(a-(-2)), so:

a-(-2)

We add all the numbers together, and all the variables

a+2

Back to the equation:

-(a+2)



We get rid of parentheses

-a-2-15=0

We add all the numbers together, and all the variables

-1a-17=0

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

-a=17

a=17/-1

a=-17

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