-9r-7=8-7r-1

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Solution for -9r-7=8-7r-1 equation: 



-9r-7=8-7r-1

We move all terms to the left:

-9r-7-(8-7r-1)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

-9r+7r-7-7=0

We add all the numbers together, and all the variables

-2r-14=0

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

-2r=14

r=14/-2

r=-7

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