-3(6+2a)=78

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Solution for -3(6+2a)=78 equation: 



-3(6+2a)=78

We move all terms to the left:

-3(6+2a)-(78)=0

We add all the numbers together, and all the variables

-3(2a+6)-78=0

We multiply parentheses

-6a-18-78=0

We add all the numbers together, and all the variables

-6a-96=0

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

-6a=96

a=96/-6

a=-16

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