-121=7+8(a-8)

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Solution for -121=7+8(a-8) equation: 



-121=7+8(a-8)

We move all terms to the left:

-121-(7+8(a-8))=0



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

7+8(a-8)

determiningTheFunctionDomain
8(a-8)+7

We multiply parentheses

8a-64+7

We add all the numbers together, and all the variables

8a-57

Back to the equation:

-(8a-57)



We get rid of parentheses

-8a+57-121=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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