15=-7+9(a-3)

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Solution for 15=-7+9(a-3) equation: 



15=-7+9(a-3)

We move all terms to the left:

15-(-7+9(a-3))=0



We calculate terms in parentheses: -(-7+9(a-3)), so:

-7+9(a-3)

determiningTheFunctionDomain
9(a-3)-7

We multiply parentheses

9a-27-7

We add all the numbers together, and all the variables

9a-34

Back to the equation:

-(9a-34)



We get rid of parentheses

-9a+34+15=0

We add all the numbers together, and all the variables

-9a+49=0

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

-9a=-49

a=-49/-9

a=5+4/9

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