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14-(-r)=2
We move all terms to the left:
14-(-r)-(2)=0
We add all the numbers together, and all the variables
-(-1r)+14-2=0
We add all the numbers together, and all the variables
-(-1r)+12=0
We get rid of parentheses
1r+12=0
We add all the numbers together, and all the variables
r+12=0
We move all terms containing r to the left, all other terms to the right
r=-12
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