3=r/8+9

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Solution for 3=r/8+9 equation: 



3=r/8+9

We move all terms to the left:

3-(r/8+9)=0

We get rid of parentheses

-r/8-9+3=0

We multiply all the terms by the denominator


-r-9*8+3*8=0

We add all the numbers together, and all the variables

-1r-48=0

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

-r=48

r=48/-1

r=-48

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