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16-2=3r+6r+1
We move all terms to the left:
16-2-(3r+6r+1)=0
We add all the numbers together, and all the variables
-(9r+1)+16-2=0
We add all the numbers together, and all the variables
-(9r+1)+14=0
We get rid of parentheses
-9r-1+14=0
We add all the numbers together, and all the variables
-9r+13=0
We move all terms containing r to the left, all other terms to the right
-9r=-13
r=-13/-9
r=1+4/9
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