9a-69=3a+15

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Solution for 9a-69=3a+15 equation: 



9a-69=3a+15

We move all terms to the left:

9a-69-(3a+15)=0

We get rid of parentheses

9a-3a-15-69=0

We add all the numbers together, and all the variables

6a-84=0

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

6a=84

a=84/6

a=14

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