15=-5+9(f+3)

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Solution for 15=-5+9(f+3) equation: 



15=-5+9(f+3)

We move all terms to the left:

15-(-5+9(f+3))=0



We calculate terms in parentheses: -(-5+9(f+3)), so:

-5+9(f+3)

determiningTheFunctionDomain
9(f+3)-5

We multiply parentheses

9f+27-5

We add all the numbers together, and all the variables

9f+22

Back to the equation:

-(9f+22)



We get rid of parentheses

-9f-22+15=0

We add all the numbers together, and all the variables

-9f-7=0

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

-9f=7

f=7/-9

f=-7/9

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