65=8r-7

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Solution for 65=8r-7 equation: 



65=8r-7

We move all terms to the left:

65-(8r-7)=0

We get rid of parentheses

-8r+7+65=0

We add all the numbers together, and all the variables

-8r+72=0

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

-8r=-72

r=-72/-8

r=+9

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