-9=r/9-10

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Solution for -9=r/9-10 equation: 



-9=r/9-10

We move all terms to the left:

-9-(r/9-10)=0

We get rid of parentheses

-r/9+10-9=0

We multiply all the terms by the denominator


-r+10*9-9*9=0

We add all the numbers together, and all the variables

-1r+9=0

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

-r=-9

r=-9/-1

r=+9

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