Вправи 1201 - 1300 » 1252

Обчисли різницю: 1) 4 7/9 – 2 = (4 – 2) + 7/9 = 2 7/9 2) 97/13 – 21/13 = (9 – 2) + (7/13 – 1/13) = 7 + 6/13 = 76/13 3) 1 – 4/21 = 21/21 – 4/21 = (21 - 4)/21 = 17/21 4) 5 – 2/11 = (4 + 1) – 2/11 = 411/11 – 2/11 = 49/11 5) 6 – 110/17 = 517/17 – 110/17 = (5 – 1) + (17/17 – 10/17) = 47/17 6) 10 – 92/5 = 95/5 – 92/5 = (9 – 9) + (5/5 – 2/5) = 0 + 3/5 = 3/5