64=15+7(r+12)

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Solution for 64=15+7(r+12) equation: 



64=15+7(r+12)

We move all terms to the left:

64-(15+7(r+12))=0



We calculate terms in parentheses: -(15+7(r+12)), so:

15+7(r+12)

determiningTheFunctionDomain
7(r+12)+15

We multiply parentheses

7r+84+15

We add all the numbers together, and all the variables

7r+99

Back to the equation:

-(7r+99)



We get rid of parentheses

-7r-99+64=0

We add all the numbers together, and all the variables

-7r-35=0

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

-7r=35

r=35/-7

r=-5

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