-5r-9=-7r+9

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Solution for -5r-9=-7r+9 equation: 



-5r-9=-7r+9

We move all terms to the left:

-5r-9-(-7r+9)=0

We get rid of parentheses

-5r+7r-9-9=0

We add all the numbers together, and all the variables

2r-18=0

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

2r=18

r=18/2

r=9

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