11r-18=2r+18

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Solution for 11r-18=2r+18 equation: 



11r-18=2r+18

We move all terms to the left:

11r-18-(2r+18)=0

We get rid of parentheses

11r-2r-18-18=0

We add all the numbers together, and all the variables

9r-36=0

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

9r=36

r=36/9

r=4

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