12a+108=9a-27

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Solution for 12a+108=9a-27 equation: 



12a+108=9a-27

We move all terms to the left:

12a+108-(9a-27)=0

We get rid of parentheses

12a-9a+27+108=0

We add all the numbers together, and all the variables

3a+135=0

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

3a=-135

a=-135/3

a=-45

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