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21 x 1/5 = 4 1/5 or 4.2
1/5 X 1/21 = 1/105
1/5 (one fifth)
21
12/3 * 21/5 = 5/3 * 11/5 = 11/3 = 32/3
21/5
one fifteenth
It is 21/5.
It is: 1/4 times 1/5 = 1/20
2
5.6 one fifth=1.4
1 2/15
3/4