15/119 ÷ 15/34 = (1534) / (11915) = 510 / 1785 = 34 / 119
1,68 ÷ 0,012 = 168 / 12 = 14 / 1 = 14
2 целых 3/7 ÷ 1 целая 13/21 = (2 7 + 3)/7 ÷ (1 21 + 13)/21 = (17/7) ÷ (34/21) = (1721) / (734) = 357 / 238 = 3 / 2
15/119 ÷ 15/34 = (1534) / (11915) = 510 / 1785 = 34 / 119
1,68 ÷ 0,012 = 168 / 12 = 14 / 1 = 14
2 целых 3/7 ÷ 1 целая 13/21 = (2 7 + 3)/7 ÷ (1 21 + 13)/21 = (17/7) ÷ (34/21) = (1721) / (734) = 357 / 238 = 3 / 2