Пошаговое объяснение:
11/30+3/25:(2-1 23/35) - 1 1/3= - 1 19/60
1) 2 - 1 23/35 = 1 35/35 - 1 23/35 = 12/35
2) 3/25: 12/35 = 3/25: 35/12 = 7/20
3) 11/30+7/20 = 22/60 + 21/60 = 1/60
4) 1/60 - 1 1/3= 1/60 - 4/3 = 1/60 - 80/60 = =1/60+ (-80/60) = - 79/60 = - 1 19/60
