А)5 2/3 :1/3-1 7/12*6 б)4 3/7:1/7-1 5/6*3 в)2 1/10:1 2/5

Question

А)5 2/3 :1/3-1 7/12*6 б)4 3/7:1/7-1 5/6*3 в)2 1/10:1 2/5

Answer 1

Решение смотри на  фотографии

Answer 2

а)5 2/3 :1/3-1 7/12*6 = 17/3:1/3 - 19/12*6 = 17 - 19/2 = 17-9 1/2 = 7 1/2
б)4 3/7:1/7-1 5/6*3 = 31/7:1/7 - 11/6*3= 31 - 11/2 = 31 - 5 1/5 = 4 1/2
в)2 1/10:1 2/5= 21/10:7/5= 15/2 = 7 1/2