-4(7a-8)-7=-171

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Solution for -4(7a-8)-7=-171 equation: 



-4(7a-8)-7=-171

We move all terms to the left:

-4(7a-8)-7-(-171)=0

We add all the numbers together, and all the variables

-4(7a-8)+164=0

We multiply parentheses

-28a+32+164=0

We add all the numbers together, and all the variables

-28a+196=0

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

-28a=-196

a=-196/-28

a=+7

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