-9r=-8-10r

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Solution for -9r=-8-10r equation: 



-9r=-8-10r

We move all terms to the left:

-9r-(-8-10r)=0

We add all the numbers together, and all the variables

-9r-(-10r-8)=0

We get rid of parentheses

-9r+10r+8=0

We add all the numbers together, and all the variables

r+8=0

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

r=-8

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