-8-9r=6r+7

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Solution for -8-9r=6r+7 equation: 



-8-9r=6r+7

We move all terms to the left:

-8-9r-(6r+7)=0

We get rid of parentheses

-9r-6r-7-8=0

We add all the numbers together, and all the variables

-15r-15=0

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

-15r=15

r=15/-15

r=-1

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