-7a-3=-2a+12

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Solution for -7a-3=-2a+12 equation: 



-7a-3=-2a+12

We move all terms to the left:

-7a-3-(-2a+12)=0

We get rid of parentheses

-7a+2a-12-3=0

We add all the numbers together, and all the variables

-5a-15=0

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

-5a=15

a=15/-5

a=-3

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