SOLUTION: 100=20-5r please solve. 100=20-5r -20 -20 _______ 80=-5r answer: -16=r

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Question 51357: 100=20-5r
please solve.
100=20-5r
-20 -20
_______
80=-5r
answer: -16=r



Found 3 solutions by THANApHD, stanbon, minnie:
Answer by THANApHD(104) About Me  (Show Source):
You can put this solution on YOUR website!
-5r = 80
r = 80/-5
r = -16

Answer by stanbon(48535) About Me  (Show Source):
You can put this solution on YOUR website!
100=20-5r
Add 5r to both sides to get:
100+5r=20
Subtract 100 from both sides to get:
5r=20-100
5r=-80
Divide both sides by 5 to get:
r=-16
Cheers,
Stan H.

Answer by minnie(1) About Me  (Show Source):