Question

помогите пожалуйста ​

Answer 1

Я незнаю прасти прасти

Answer 2

1) (3/4 + 1/20) × 1/2 = 2/5

1. 3/4 + 1/20 = 15/20 + 1/20 = 4/5

2. 4/5 × 1/2 = (2×1) ÷ (5×1) = 2/5

2) (7/12 - 1/3) × 16/19 = 4/19

1. 7/12 - 1/3 = 7 × 1 - 4 × 1 /12 = 7 - 4 /12 = 3/12 = 1/4

2. 1/4 × 16/19 = 1 × 16 ÷ 4 × 19 = 4/19

3) (7 3/5 - 2 4/15) × 9/32 = 1 1/2

1. 7 3/5 - 2 4/15 = 7 9/15 - 2 4/15= 5 5 /15

= 5 1/3

2. 5 1/3 × 9/32 = 2/3 = 1 1/2

4) (11/24 + 1/6) × 1 3/5 = 1

1. 11/24 + 1/6 = 11/24 + 4/24 = 15/24 = 5/8

2. 5/8 × 1 3/5 = 5/8 × 8/5 = 1