3 5/21+4 8/21=68/21+92/21=160/21=7 13/21
9 5/6+ 7 = 16 5/6
3 12/23 + 4 11/23 = 81/23+103/23=184/23=8
7 15/19+ 4 14/19 = 148/19+ 90/19= 238/19= 12 10/19
9 11/12-3 10/12= 119/12 - 46/12= 73/12=6 1/12
11-5/18= 10 18/18-5/18= 10 13/18
8 3/17 - 4 11/17 = 139/17 - 79/17 = 60/17 = 3 9/17
9 11/15 - 4= 5 11/15
21 - 8 7/15 = 13 7/15
10 15/16 - 3 15/16 = 7
Пошаговое объяснение:
3 5/21+4 8/21=68/21+92/21=160/21=7 13/21
9 5/6+ 7 = 16 5/6
3 12/23 + 4 11/23 = 81/23+103/23=184/23=8
7 15/19+ 4 14/19 = 148/19+ 90/19= 238/19= 12 10/19
9 11/12-3 10/12= 119/12 - 46/12= 73/12=6 1/12
11-5/18= 10 18/18-5/18= 10 13/18
8 3/17 - 4 11/17 = 139/17 - 79/17 = 60/17 = 3 9/17
9 11/15 - 4= 5 11/15
21 - 8 7/15 = 13 7/15
10 15/16 - 3 15/16 = 7
Пошаговое объяснение: