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r+150=2r/9
We move all terms to the left:
r+150-(2r/9)=0
We add all the numbers together, and all the variables
r-(+2r/9)+150=0
We get rid of parentheses
r-2r/9+150=0
We multiply all the terms by the denominator
r*9-2r+150*9=0
We add all the numbers together, and all the variables
-2r+r*9+1350=0
Wy multiply elements
-2r+9r+1350=0
We add all the numbers together, and all the variables
7r+1350=0
We move all terms containing r to the left, all other terms to the right
7r=-1350
r=-1350/7
r=-192+6/7
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