-8a+7(1-7a)=406

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Solution for -8a+7(1-7a)=406 equation: 



-8a+7(1-7a)=406

We move all terms to the left:

-8a+7(1-7a)-(406)=0

We add all the numbers together, and all the variables

-8a+7(-7a+1)-406=0

We multiply parentheses

-8a-49a+7-406=0

We add all the numbers together, and all the variables

-57a-399=0

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

-57a=399

a=399/-57

a=-7

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