13=r/8+8

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Solution for 13=r/8+8 equation: 



13=r/8+8

We move all terms to the left:

13-(r/8+8)=0

We get rid of parentheses

-r/8-8+13=0

We multiply all the terms by the denominator


-r-8*8+13*8=0

We add all the numbers together, and all the variables

-1r+40=0

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

-r=-40

r=-40/-1

r=+40

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