2-5a=-78

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Solution for 2-5a=-78 equation: 



2-5a=-78

We move all terms to the left:

2-5a-(-78)=0

We add all the numbers together, and all the variables

-5a+80=0

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

-5a=-80

a=-80/-5

a=+16

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