-2-7r=3r-9r+7

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Solution for -2-7r=3r-9r+7 equation: 



-2-7r=3r-9r+7

We move all terms to the left:

-2-7r-(3r-9r+7)=0

We add all the numbers together, and all the variables

-7r-(-6r+7)-2=0

We get rid of parentheses

-7r+6r-7-2=0

We add all the numbers together, and all the variables

-1r-9=0

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

-r=9

r=9/-1

r=-9

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