7(a-4)=-84

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Solution for 7(a-4)=-84 equation: 



7(a-4)=-84

We move all terms to the left:

7(a-4)-(-84)=0

We add all the numbers together, and all the variables

7(a-4)+84=0

We multiply parentheses

7a-28+84=0

We add all the numbers together, and all the variables

7a+56=0

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

7a=-56

a=-56/7

a=-8

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