3r+9=5r-11

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Solution for 3r+9=5r-11 equation: 



3r+9=5r-11

We move all terms to the left:

3r+9-(5r-11)=0

We get rid of parentheses

3r-5r+11+9=0

We add all the numbers together, and all the variables

-2r+20=0

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

-2r=-20

r=-20/-2

r=+10

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