Выполните умножение 1 1/6*1 5/79 3/8*2 2/54 5/12*6/532 5/11*1 19/36

1. 1 1/6 * 1 5/7 = (7 * 12) / (6 * 7) = 84/42 = 2.

1 1/6 = (1 * 6 + 1) / 6 = 7/6.

1 5/7 = (1 * 7 + 5) / 7 = 12/7.

2. 9 3/8 * 2 2/5 = (75 * 12) / (8 * 5) = 900/40 = 22 1/2.

9 3/8 = (9 * 8 + 3) / 8 = 75/8.

2 2/5 = (2 * 5 + 2) / 5 = 12/5.

3. 4 5/12 * 6/53 = (53 * 6) / (12 * 53) = 318/636 на 318 = 1/2.

4 5/12 = (4 * 12 + 5) / 12 = 53/12.

4. 2 5/11 * 1 19/36 = (27 * 55) / (11 * 36) = 1485/396 на 99 = 15/4 = 3 3/4.

2 5/11 = (2 * 11 + 5) / 11 = 27/11.

1 19/36 = (1 * 36 + 19) / 36 = 55/36.