-7+4=15a-9a

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Solution for -7+4=15a-9a equation: 



-7+4=15a-9a

We move all terms to the left:

-7+4-(15a-9a)=0

We add all the numbers together, and all the variables

-(+6a)-7+4=0

We add all the numbers together, and all the variables

-(+6a)-3=0

We get rid of parentheses

-6a-3=0

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

-6a=3

a=3/-6

a=-1/2

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