Пошаговое объяснение:
1) 10 18/18 -5/18 = 10 13/18
2) 11 13/13-5/13 = 11 8/13
3) 21 -8 5/18=20 18/18-8 5/18 = 2 13/18
4) 12 12/12-4 5/12=8 7/12
5) 8 5/18-4 11/18 = 7 18/18+5/18-4 11/18 = 7 23/18-4 11/18 = 3 12/18 = 3 2/3
6) 9 15/15+7/15-3 11/15 = 9 22/15 - 3 11/15 = 6 11/15
7) (7 5/14 + 2 9/14)-3 5/8 = 9 14/14 - 3 5/8 = 10-3 5/8 = 9 8/8-3 5/8 = 6 3/8
8) 12 2/13 - 9 17/13 = 12 2/13 - 10 4/13 = 11 13/13+2/13 - 10 4/13 = 11 15/13 - 10 2/13 = 1 13/13 = 2
Пошаговое объяснение:
1) 10 18/18 -5/18 = 10 13/18
2) 11 13/13-5/13 = 11 8/13
3) 21 -8 5/18=20 18/18-8 5/18 = 2 13/18
4) 12 12/12-4 5/12=8 7/12
5) 8 5/18-4 11/18 = 7 18/18+5/18-4 11/18 = 7 23/18-4 11/18 = 3 12/18 = 3 2/3
6) 9 15/15+7/15-3 11/15 = 9 22/15 - 3 11/15 = 6 11/15
7) (7 5/14 + 2 9/14)-3 5/8 = 9 14/14 - 3 5/8 = 10-3 5/8 = 9 8/8-3 5/8 = 6 3/8
8) 12 2/13 - 9 17/13 = 12 2/13 - 10 4/13 = 11 13/13+2/13 - 10 4/13 = 11 15/13 - 10 2/13 = 1 13/13 = 2