-15=5a+12-2a=6

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Solution for -15=5a+12-2a=6 equation: 



-15=5a+12-2a=6

We move all terms to the left:

-15-(5a+12-2a)=0

We add all the numbers together, and all the variables

-(3a+12)-15=0

We get rid of parentheses

-3a-12-15=0

We add all the numbers together, and all the variables

-3a-27=0

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

-3a=27

a=27/-3

a=-9

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