1) = 4,8-4,8+1,5 = 1,5

2) = -13,6+2 3/5 = -13,6+2,6 = -11

3) = -5/6-1/6 = -6/6 = -1

4) = 3 4/7+5 3/7-с = 8 7/7-с = 9-с

5) = 9,5+d-6 1/3-2/3 = 9.5+d-6 3/3 = 9.5+d-7 = 2.5+d

6) = 1/9+2 2/9-y+2/3 = 2 3/9-y+2/3 = 2 3/3-y = 3-y