9=r/2-4

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Solution for 9=r/2-4 equation: 



9=r/2-4

We move all terms to the left:

9-(r/2-4)=0

We get rid of parentheses

-r/2+4+9=0

We multiply all the terms by the denominator


-r+4*2+9*2=0

We add all the numbers together, and all the variables

-1r+26=0

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

-r=-26

r=-26/-1

r=+26

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