-6(r-1)/2=9

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Solution for -6(r-1)/2=9 equation: 



-6(r-1)/2=9

We move all terms to the left:

-6(r-1)/2-(9)=0

We multiply all the terms by the denominator


-6(r-1)-9*2=0

We add all the numbers together, and all the variables

-6(r-1)-18=0

We multiply parentheses

-6r+6-18=0

We add all the numbers together, and all the variables

-6r-12=0

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

-6r=12

r=12/-6

r=-2

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