A2=-12-7a

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Solution for A2=-12-7a equation: 



2=-12-7A

We move all terms to the left:

2-(-12-7A)=0

We add all the numbers together, and all the variables

-(-7A-12)+2=0

We get rid of parentheses

7A+12+2=0

We add all the numbers together, and all the variables

7A+14=0

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

7A=-14

A=-14/7

A=-2

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