39=8r-9

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Solution for 39=8r-9 equation: 



39=8r-9

We move all terms to the left:

39-(8r-9)=0

We get rid of parentheses

-8r+9+39=0

We add all the numbers together, and all the variables

-8r+48=0

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

-8r=-48

r=-48/-8

r=+6

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