-12=-7a+5a

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Solution for -12=-7a+5a equation: 



-12=-7a+5a

We move all terms to the left:

-12-(-7a+5a)=0

We add all the numbers together, and all the variables

-(-2a)-12=0

We get rid of parentheses

2a-12=0

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

2a=12

a=12/2

a=6

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