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nefertiri64
04.02.2021 •
Mathematics
What times table equals 21
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Ответ:
8 more black beads.
Step-by-step explanation:
B=1
W=3
B:W = 1: 3
Make
B:W = 3:1 = 9:3
So we need (9-1) = 8 more black beads.