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zalisa [80]
3 years ago
12

Can someone plz help me solved this problem! I really need help ASAP! Will mark you as brainiest!

Mathematics
2 answers:
Ivahew [28]3 years ago
6 0

Answer:

a) k = 3 b) k = 4

Step-by-step explanation:

a) 3 x 7 = 21

b) 4 x 3 = 12

pogonyaev3 years ago
5 0

Answer:

1) k=3 (2) k=4

Step-by-step explanation:

21=k\cdot \:7\quad \\\mathrm{Switch\:sides}\\k\cdot \:7=21\\\frac{k\cdot \:7}{7}=\frac{21}{7}\\k=3\\2)\\12=k\cdot \:3\\Switch\:sides\\k\cdot \:3=12\\\frac{k\cdot \:3}{3}=\frac{12}{3}\\k=4

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