(3a-15)-(9a+2=)

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Solution for (3a-15)-(9a+2=) equation: 



(3a-15)-(9a+2=)

We move all terms to the left:

(3a-15)-(9a+2-())=0

We get rid of parentheses

3a-(9a+2-())-15=0



We calculate terms in parentheses: -(9a+2-()), so:

9a+2-()

We add all the numbers together, and all the variables

9a

Back to the equation:

-(9a)



We add all the numbers together, and all the variables

-6a-15=0

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

-6a=15

a=15/-6

a=-2+1/2

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