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-5(r+4)=-97
We move all terms to the left:
-5(r+4)-(-97)=0
We add all the numbers together, and all the variables
-5(r+4)+97=0
We multiply parentheses
-5r-20+97=0
We add all the numbers together, and all the variables
-5r+77=0
We move all terms containing r to the left, all other terms to the right
-5r=-77
r=-77/-5
r=15+2/5
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