-78=-142-a

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Solution for -78=-142-a equation: 



-78=-142-a

We move all terms to the left:

-78-(-142-a)=0

We add all the numbers together, and all the variables

-(-1a-142)-78=0

We get rid of parentheses

1a+142-78=0

We add all the numbers together, and all the variables

a+64=0

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

a=-64

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