-2a-6=-20

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Solution for -2a-6=-20 equation: 



-2a-6=-20

We move all terms to the left:

-2a-6-(-20)=0

We add all the numbers together, and all the variables

-2a+14=0

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

-2a=-14

a=-14/-2

a=+7

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