Найдите значение выражения: 1. (11/18-4/9) * 3/162.1 3/5*3/4+1 3/8)

1. (11/18 - 4/9) * 3/16 = (11/18 - 2 * 4/18) * 3/16 = (11/18 - 8/18) * 3/16 = (11 - 8) / 18 * 3/16 = 3/18 * 3/16 = (3 * 3) / (18 * 16) = 1 / (2 * 16) = 1/32;

Ответ: 1/32.

2. 1 3/5 * 3/4 + 1 3/8 = (1 * 5 + 3) / 5 * 3/4 + (1 * 8 + 3) / 8 = 8/5 * 3/4 + 11/8 = (8 * 3) / (5 * 4) + 11/8 = 6/5 + 11/8 = 8 * 6/40 + 5 * 11/40 = 48/40 + 55/40 = 103/40;

Ответ: 103/40.