11=r/3+7

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Solution for 11=r/3+7 equation: 



11=r/3+7

We move all terms to the left:

11-(r/3+7)=0

We get rid of parentheses

-r/3-7+11=0

We multiply all the terms by the denominator


-r-7*3+11*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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