15=r/3+11

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Solution for 15=r/3+11 equation: 



15=r/3+11

We move all terms to the left:

15-(r/3+11)=0

We get rid of parentheses

-r/3-11+15=0

We multiply all the terms by the denominator


-r-11*3+15*3=0

We add all the numbers together, and all the variables

-1r+12=0

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

-r=-12

r=-12/-1

r=+12

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