-161=5a-8(-2a+7)

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Solution for -161=5a-8(-2a+7) equation: 



-161=5a-8(-2a+7)

We move all terms to the left:

-161-(5a-8(-2a+7))=0



We calculate terms in parentheses: -(5a-8(-2a+7)), so:

5a-8(-2a+7)

We multiply parentheses

5a+16a-56

We add all the numbers together, and all the variables

21a-56

Back to the equation:

-(21a-56)



We get rid of parentheses

-21a+56-161=0

We add all the numbers together, and all the variables

-21a-105=0

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

-21a=105

a=105/-21

a=-5

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