6a+15=9a-27

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Solution for 6a+15=9a-27 equation: 



6a+15=9a-27

We move all terms to the left:

6a+15-(9a-27)=0

We get rid of parentheses

6a-9a+27+15=0

We add all the numbers together, and all the variables

-3a+42=0

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

-3a=-42

a=-42/-3

a=+14

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