Question

3. Умножить дроби : 4/9 * 3/10 ; 22/25 * 10/33 ; 10/63 * 14/15 ; 80/93 * 9/100; 4. Разделить дроби : 2/5 : 6/25 ; 1/3 : 5/12 ; 3/4 : 2/6 ; 2/15 : 1/5 ;

Answer 1

Ответ:

Пошаговое объяснение:

4/9 * 3/10 = 2/3 * 1/5 = 2/15

22/25 * 10/33 = 2/5 * 2/3 = 4/15

10/63 * 14/15 = 2/9 * 2/3 = 4/27

80/93 * 9/100 = 4/31 * 3/5 = 12/155

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2/5 : 6/25 = 2/5 * 25/6 = 5/3 = 1. 2/3

1/3 : 5/12 = 1/3 * 12/5 = 4/5

3/4 : 2/6 = 3/4 * 6/2 = 3/2 * 3/2 = 9/4 = 2. 1/4

2/15 : 1/5 = 2/15 * 5 = 2/3

Answer 2

3. Умножим дроби: 4/9 * 3/10 = (4*3)/(9*10) = 12/90 = 2/15 22/25 * 10/33 = (22*10)/(25*33) = 220/825 = 44/165 10/63 * 14/15 = (10*14)/(63*15) = 140/945 = 4/27 80/93 * 9/100 = (80*9)/(93*100) = 720/9300 = 4/51

4. Разделим дроби: 2/5 ÷ 6/25 = (2/5) * (25/6) = 50/30 = 5/3 1/3 ÷ 5/12 = (1/3) * (12/5) = 12/15 = 4/5 3/4 ÷ 2/6 = (3/4) * (6/2) = 18/8 = 9/4 2/15 ÷ 1/5 = (2/15) * (5/1) = 10/15 = 2/3