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Elena L [17]
3 years ago
7

What is the solution 21=42-3r

Mathematics
2 answers:
melamori03 [73]3 years ago
5 0

Answer: -7

Step-by-step explanation:

3r=21-42

3r= -21

r= -7

kotykmax [81]3 years ago
3 0

Answer: 21

Step-by-step explanation:

21=42-3r

3r-42=21

3r=21+42

3r=63

r=21

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