Question

Выполните умножение: 1) 4/9×3/32 2) 2/9×7/8 3) 27/56×56/45 4)45/64×40/63 Найдите произведение: 1) 5 × 3/26 2) 5/8 × 4 3) 9/28 × 56 4) 6 6/7 × 3/8 5) 5 1/7 × 1 8/27 6) 1 8/9 × 1 1/8 × 2 2/3 Помогите пожалуйста!!

Answer 1

Ответ:

Пошаговое объяснение:

Сокращаем дроби

4/9×3/32=1/24

2/9×7/8=7/36

27/56×56/45=3/5

1, 15/26;

2. 20/8=2 1/2

3.18

4. 48/7×3/8=18/7=2 4/7

5.36/7×35/27=20/3=6 2/3

17/9×9/8=17/8=2 1/8

Answer 2

1) Для выполнения умножения дробей, умножаем числители между собой и знаменатели между собой:

1) (4/9) × (3/32) = (4 × 3) / (9 × 32) = 12/288 = 1/24

2) (2/9) × (7/8) = (2 × 7) / (9 × 8) = 14/72 = 7/36

3) (27/56) × (56/45) = (27 × 56) / (56 × 45) = 1512/2520 = 63/105

4) (45/64) × (40/63) = (45 × 40) / (64 × 63) = 1800/4032 = 25/56

Найдем произведение:

1) 5 × (3/26) = (5 × 3) / 26 = 15/26

2) (5/8) × 4 = 5 × (8/4) = 5 × 2 = 10

3) (9/28) × 56 = 9 × (56/28) = 9 × 2 = 18

4) (6 + 6/7) × (3/8) = (6 × 7 + 6) / (7 × 8) = (42 + 6) / 56 = 48/56 = 6/7

5) (5 + 1/7) × (1 + 8/27) = (5 × 7 + 1) / (7 × 27) = (35 + 1) / 189 = 36/189 = 4/21

6) (1 + 8/9) × (1 + 1/8) × (2 + 2/3) = (9/9 + 8/9) × (8/8 + 1/8) × (6/3 + 2/3) = (17/9) × (9/8) × (8/3) = (17 × 9 × 8) / (9 × 8 × 3) = 1224/216 = 17/3