Завдання 301 - 400 » 372

Обчисліть: 1) 1/6 + 5/12 = 2/12 + 5/12 = 7/12; 2) 3/8 + 5/24 = 9/24 + 5/24 = 14/24 = 7/12; 3) 1/3 + 7/9 = 3/9 + 7/9 = 10/9 = 11/9; 4) 11/18 + 1/6 = 11/18 + 3/18 = 14/18 = 7/9.