Выполните действие (5,4-2 целых1/3):7целых 2/3
5,4-2 1/3=5 4/10-2 1/3=27/5 - 7/3 =(27 × 3 - 7 × 5)/15 = 81/15 - 35/15 = 46/15 = 3 1/15 3 1/15÷ 7 2/3=46/15 ÷ 23/3 = 46/15 × 3/23 = 138/345= 2/5 ответ 2/5