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r/9+27=22
We move all terms to the left:
r/9+27-(22)=0
We add all the numbers together, and all the variables
r/9+5=0
We multiply all the terms by the denominator
r+5*9=0
We add all the numbers together, and all the variables
r+45=0
We move all terms containing r to the left, all other terms to the right
r=-45
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