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Step by step solve this problem -4=r/20-5

Step by step solve this problem -4=r/20-5
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1 vote
Step by step solve this problem -4=r/20-5

User Reddersky
by
7.8k points

1 Answer

4 votes
-4 =
(r)/(20) - 5

(r)/(20) - 5 = -4 (Switched sides)
(
(r)/(20) - 5)20 = (-4)20 (Multiply both sides by 20)
r-100 = -80
r - 100 + 100 = -80 + 100 (Add 100 to each side)
r = 20

Hope this helped :)


User Zava
by
7.7k points
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