9=r/3+7

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Solution for 9=r/3+7 equation: 



9=r/3+7

We move all terms to the left:

9-(r/3+7)=0

We get rid of parentheses

-r/3-7+9=0

We multiply all the terms by the denominator


-r-7*3+9*3=0

We add all the numbers together, and all the variables

-1r+6=0

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

-r=-6

r=-6/-1

r=+6

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