-12-a=4a+3

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Solution for -12-a=4a+3 equation: 



-12-a=4a+3

We move all terms to the left:

-12-a-(4a+3)=0

We add all the numbers together, and all the variables

-1a-(4a+3)-12=0

We get rid of parentheses

-1a-4a-3-12=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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