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-5(r+2.75)=3
We move all terms to the left:
-5(r+2.75)-(3)=0
We multiply parentheses
-5r-13.75-3=0
We add all the numbers together, and all the variables
-5r-16.75=0
We move all terms containing r to the left, all other terms to the right
-5r=16.75
r=16.75/-5
r=-3+1/2.8571428571429
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