7r-7=2r-18

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Solution for 7r-7=2r-18 equation: 



7r-7=2r-18

We move all terms to the left:

7r-7-(2r-18)=0

We get rid of parentheses

7r-2r+18-7=0

We add all the numbers together, and all the variables

5r+11=0

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

5r=-11

r=-11/5

r=-2+1/5

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