0
Anonymous
3
Maeve Christiansen ∙
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21/7, 210/70, 63/21
Wiki User
21 divided by 7 is three.
20/21
0.0206
0.3134
Three is the lowest common denominator. 21 divided by 3 = 7 54 divided by 3 = 18 21/54 = 7/18