9=r/2+7

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Solution for 9=r/2+7 equation: 



9=r/2+7

We move all terms to the left:

9-(r/2+7)=0

We get rid of parentheses

-r/2-7+9=0

We multiply all the terms by the denominator


-r-7*2+9*2=0

We add all the numbers together, and all the variables

-1r+4=0

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

-r=-4

r=-4/-1

r=+4

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