Пошаговое объяснение:
9/10 - (3/4 - 3/5) + 5/8 = 11/8
1) 3/4 - 3/5 = 15/20 - 12/20 = 3/20
2) 9/10 - 3/20 = 18/20 - 3/20 = 15/20 = 3/4
3) 3/4 + 5/8 = 6/8 + 5/8 = 11/8
Пошаговое объяснение:
9/10 - (3/4 - 3/5) + 5/8 = 11/8
1) 3/4 - 3/5 = 15/20 - 12/20 = 3/20
2) 9/10 - 3/20 = 18/20 - 3/20 = 15/20 = 3/4
3) 3/4 + 5/8 = 6/8 + 5/8 = 11/8
2) 9/10-3/20=18/20-3/20= 15/20=3/4
3)3/4+5/8= 6/8+5/8=11/8= 1 3/8
ответ: 1 3/8