-12=9a-15-30

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Solution for -12=9a-15-30 equation: 



-12=9a-15-30

We move all terms to the left:

-12-(9a-15-30)=0

We add all the numbers together, and all the variables

-(9a-45)-12=0

We get rid of parentheses

-9a+45-12=0

We add all the numbers together, and all the variables

-9a+33=0

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

-9a=-33

a=-33/-9

a=3+2/3

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