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anygoal [31]
3 years ago
12

Evaluate the expression 3mn if m=3 and n=7 please help me solve this problem and explain

Mathematics
2 answers:
Helga [31]3 years ago
7 0
3(3)(7)
3*3=9then 9*7 equals 63.
so the answer is 63
Vinil7 [7]3 years ago
6 0
Substitute 3 into the expression for m, and 7 into it for n. So 3mn = 3(3)(7) = 3 x 21 = 63.
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