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Arada [10]
3 years ago
12

What is the solution? 21=42−3r A r=−8 B r=−7 C r = 7 D r = 8

Mathematics
2 answers:
valentina_108 [34]3 years ago
8 0
C. R = 7. 3x7= 21-42=21
g100num [7]3 years ago
4 0

Answer:

C r=7

Step-by-step explanation:

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