-72=9(r+6)

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Solution for -72=9(r+6) equation: 



-72=9(r+6)

We move all terms to the left:

-72-(9(r+6))=0



We calculate terms in parentheses: -(9(r+6)), so:

9(r+6)

We multiply parentheses

9r+54

Back to the equation:

-(9r+54)



We get rid of parentheses

-9r-54-72=0

We add all the numbers together, and all the variables

-9r-126=0

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

-9r=126

r=126/-9

r=-14

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