8=a+(-7)

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Solution for 8=a+(-7) equation: 



8=a+(-7)

We move all terms to the left:

8-(a+(-7))=0



We calculate terms in parentheses: -(a+(-7)), so:

a+(-7)

We add all the numbers together, and all the variables

a-7

Back to the equation:

-(a-7)



We get rid of parentheses

-a+7+8=0

We add all the numbers together, and all the variables

-1a+15=0

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

-a=-15

a=-15/-1

a=+15

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