1 целая1/2*2/9 - (6-5 целых3/5) в квадрате = ? 1/3 * (4 - (1 целая1/2) в кубе) * (3-2 целых7/15) = ?

а) 1 1/2 * 2/9 - (6 - 5 3/5) 2 степ = 7/25.

6 = 5 5/5 = (5 * 5 + 5) / 5 = 30/5.

5 3/5 = (5 * 5 + 3) / 5 = 28/5.

1 1/2 = (1 * 2 + 1) / 2 = 3/2.

1. 30/5 - 28/5 = 2/5.

2. 3/2 * 2/9 = (3 * 2) / (2 * 9) = 6/18 на 6 = 1/3.

3. 1/3 - (2/5) 2 = 1/3 - 4/25 = (25 - 4) / 75 = 21/75 на 3 = 7/25.

б) 1/3 * (4 - (1 1/2) 3) * (3 - 2 7/15) = 1/9.

1 1/2 = (1 * 2 + 1) / 2 = (3/2) 3 = (3 * 3 * 3) / (2 * 2 * 2) = 27/8.

4 = 3 8/8 = (3 * 8 + 8) / 8 = 32/8.

2 7/15 = (2 * 15 + 7) / 15 = 37/15.

3 = 2 15/15 = (2 * 15 + 15) / 15 = 45/15.

1. 32/8 - 27/8 = 5/8.

2. 45/15 - 37/15 = 8/15.

3. 1/3 * 5/8 * 8/15 = (1 * 5 * 8) / (3 * 8 * 15) = 40/360 на 40 = 1/9.