-1=r/9

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Solution for -1=r/9 equation: 



-1=r/9

We move all terms to the left:

-1-(r/9)=0

We add all the numbers together, and all the variables

-(+r/9)-1=0

We get rid of parentheses

-r/9-1=0

We multiply all the terms by the denominator


-r-1*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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