9=r/12

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Solution for 9=r/12 equation: 



9=r/12

We move all terms to the left:

9-(r/12)=0

We add all the numbers together, and all the variables

-(+r/12)+9=0

We get rid of parentheses

-r/12+9=0

We multiply all the terms by the denominator


-r+9*12=0

We add all the numbers together, and all the variables

-1r+108=0

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

-r=-108

r=-108/-1

r=+108

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