1) 2/5 + 4/7 = 14/35 + 28/35 = 42/35 = 6/5 = 1+1/5
2) 1/2 - 3/8 = 4/8 - 3/8 = 1/8 = 0,125
3) 5 - 3+5/6 = (4+6/6) - (3+5/6) = 1+1/6
Пошаговое объяснение:
1. 34\35
2. 1\8
3. - 5-6(не точно
6/6 =1
30/6 = 5
30/6 - 35/6 = - 5/6
