20r=-18+18r

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Solution for 20r=-18+18r equation: 



20r=-18+18r

We move all terms to the left:

20r-(-18+18r)=0

We add all the numbers together, and all the variables

20r-(18r-18)=0

We get rid of parentheses

20r-18r+18=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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