-18-9r=-r

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Solution for -18-9r=-r equation: 



-18-9r=-r

We move all terms to the left:

-18-9r-(-r)=0

We add all the numbers together, and all the variables

-9r-(-1r)-18=0

We get rid of parentheses

-9r+1r-18=0

We add all the numbers together, and all the variables

-8r-18=0

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

-8r=18

r=18/-8

r=-2+1/4

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