1) Для 13/30 и 22/45:Сумма: 13/30 + 22/45 = (133)/(303) + (222)/(452) = 39/90 + 44/90 = 83/90Разность: 13/30 - 22/45 = (133)/(303) - (222)/(452) = 39/90 - 44/90 = -5/90
2) Для 3/14 и 4/21:Сумма: 3/14 + 4/21 = (33)/(143) + (42)/(212) = 9/42 + 8/42 = 17/42Разность: 3/14 - 4/21 = (33)/(143) - (42)/(212) = 9/42 - 8/42 = 1/42
3) Для 17/45 и 5/18:Сумма: 17/45 + 5/18 = (172)/(452) + (55)/(185) = 34/90 + 25/90 = 59/90Разность: 17/45 - 5/18 = (172)/(452) - (55)/(185) = 34/90 - 25/90 = 9/90 = 1/10.
1) Для 13/30 и 22/45:
Сумма: 13/30 + 22/45 = (133)/(303) + (222)/(452) = 39/90 + 44/90 = 83/90
Разность: 13/30 - 22/45 = (133)/(303) - (222)/(452) = 39/90 - 44/90 = -5/90
2) Для 3/14 и 4/21:
Сумма: 3/14 + 4/21 = (33)/(143) + (42)/(212) = 9/42 + 8/42 = 17/42
Разность: 3/14 - 4/21 = (33)/(143) - (42)/(212) = 9/42 - 8/42 = 1/42
3) Для 17/45 и 5/18:
Сумма: 17/45 + 5/18 = (172)/(452) + (55)/(185) = 34/90 + 25/90 = 59/90
Разность: 17/45 - 5/18 = (172)/(452) - (55)/(185) = 34/90 - 25/90 = 9/90 = 1/10.