Найди значение разности: 2) 6 7/9-3 22/27 4) 8 13/20-5 27/40

2)7,4-12=-4,6
4)40,65-13,175=26,9

1) 6 7/9 - 3 22/27 = 61/9 - 103/27 = 183/27 - 103/27 = 80/27 = 2 26/27

4) 8 13/20 - 5 27/40 = 173/20 - 227/40 = 346/40 - 227/40 = 119/40 = 2 39/40 = 2.975