2(-7-5a)=-84

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Solution for 2(-7-5a)=-84 equation: 



2(-7-5a)=-84

We move all terms to the left:

2(-7-5a)-(-84)=0

We add all the numbers together, and all the variables

2(-5a-7)-(-84)=0

We add all the numbers together, and all the variables

2(-5a-7)+84=0

We multiply parentheses

-10a-14+84=0

We add all the numbers together, and all the variables

-10a+70=0

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

-10a=-70

a=-70/-10

a=+7

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