9(r+5)=-3(r-39)

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Solution for 9(r+5)=-3(r-39) equation: 



9(r+5)=-3(r-39)

We move all terms to the left:

9(r+5)-(-3(r-39))=0

We multiply parentheses

9r-(-3(r-39))+45=0



We calculate terms in parentheses: -(-3(r-39)), so:

-3(r-39)

We multiply parentheses

-3r+117

Back to the equation:

-(-3r+117)



We get rid of parentheses

9r+3r-117+45=0

We add all the numbers together, and all the variables

12r-72=0

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

12r=72

r=72/12

r=6

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