1638400 см это сколько дециметров

Question

Математика: 1638400 см это сколько дециметров

deniskim01 · Accepted Answer

(1 1/3 + 2 4/5) : 6 1/5 = 2/3
1) 1 1/3 + 2 4/5 = 1 5/15 + 2 12/15 = 3 17/15 = 4 2/15
2) 4 2/15 : 6 1/5 = 62/15 : 31/5 = 62/15 * 5/31 = 2/3

(2 3/8 - 1 1/6) : 2 5/12 = 1/2
1) 2 3/8 - 1 1/6 = 2 9/24 - 1 4/24 = 1 5/24
2) 1 5/24 : 2 5/12 = 29/24 : 29/12 = 29/24 * 12/29 = 12/24 = 1/2

1 2/3 * 4/5 + 2/3 = 2
1) 1 2/3 * 4/5 = 5/3 * 4/5 = 4/3 = 1 1/3
2) 1 1/3 + 2/3 = 1 3/3 = 2

3 1/5 : 3/4 - 1/3 = 3 14/15
1) 3 1/5 : 3/4 = 16/5 : 3/4 = 16/5 * 4/3 = 64/15 = 4 4/15
2) 4 4/15 - 1/3 = 4 4/15 - 5/15 = 3 19/15 - 5/15 = 3 14/15

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