-78-a=84

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Solution for -78-a=84 equation: 



-78-a=84

We move all terms to the left:

-78-a-(84)=0

We add all the numbers together, and all the variables

-1a-162=0

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

-a=162

a=162/-1

a=-162

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