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Want is the solution? 21 = 42 - 3r A. r = -8 B. r = -7 C. r = 7 D. r = 8

Want is the solution? 21 = 42 - 3r A. r = -8 B. r = -7 C. r = 7 D. r = 8
asked 161k views
1 vote
Want is the solution?

21 = 42 - 3r

A. r = -8
B. r = -7
C. r = 7
D. r = 8

asked
User Bobby Eickhoff
by
7.7k points

1 Answer

7 votes
21 = 42 - 3r
-21 = -3r
r = 7

So C.
answered
User Hectorsvill
by
8.0k points
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