-8-9=-9r

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Solution for -8-9=-9r equation: 



-8-9=-9r

We move all terms to the left:

-8-9-(-9r)=0

We add all the numbers together, and all the variables

-(-9r)-17=0

We get rid of parentheses

9r-17=0

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

9r=17

r=17/9

r=1+8/9

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