5a-12=9a+12

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Solution for 5a-12=9a+12 equation: 



5a-12=9a+12

We move all terms to the left:

5a-12-(9a+12)=0

We get rid of parentheses

5a-9a-12-12=0

We add all the numbers together, and all the variables

-4a-24=0

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

-4a=24

a=24/-4

a=-6

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