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-5(r+6)=84
We move all terms to the left:
-5(r+6)-(84)=0
We multiply parentheses
-5r-30-84=0
We add all the numbers together, and all the variables
-5r-114=0
We move all terms containing r to the left, all other terms to the right
-5r=114
r=114/-5
r=-22+4/5
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