-3(2+6a)=84

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Solution for -3(2+6a)=84 equation: 



-3(2+6a)=84

We move all terms to the left:

-3(2+6a)-(84)=0

We add all the numbers together, and all the variables

-3(6a+2)-84=0

We multiply parentheses

-18a-6-84=0

We add all the numbers together, and all the variables

-18a-90=0

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

-18a=90

a=90/-18

a=-5

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