-120=-8(a+7)

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Solution for -120=-8(a+7) equation: 



-120=-8(a+7)

We move all terms to the left:

-120-(-8(a+7))=0



We calculate terms in parentheses: -(-8(a+7)), so:

-8(a+7)

We multiply parentheses

-8a-56

Back to the equation:

-(-8a-56)



We get rid of parentheses

8a+56-120=0

We add all the numbers together, and all the variables

8a-64=0

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

8a=64

a=64/8

a=8

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