7(-5-a)=-84

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



7(-5-a)=-84

We move all terms to the left:

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

We add all the numbers together, and all the variables

7(-1a-5)-(-84)=0

We add all the numbers together, and all the variables

7(-1a-5)+84=0

We multiply parentheses

-7a-35+84=0

We add all the numbers together, and all the variables

-7a+49=0

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

-7a=-49

a=-49/-7

a=+7

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