8r+-9=-r

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



8r+-9=-r

We move all terms to the left:

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

We add all the numbers together, and all the variables

8r-(-1r)-9+=0

We add all the numbers together, and all the variables

8r-(-1r)=0

We get rid of parentheses

8r+1r=0

We add all the numbers together, and all the variables

9r=0

r=0/9

r=0

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