Question

Вычислите: 1)-1/4-5/7 2)-5/6-1/3 3)-1/8-3/4 4)-4 3/8-2 1/4 5)-6 1/2-3 5/7 6)-9-3 5/9.

Answer 1

1)-1/4-5/7=-7/28-20/28=-27/28
2)-5/6-1/3=-10/12-4/12=-14/12=-1 1/6
3)-1/8-3/4=-1/8-6/8=-7/8
4)-4 3/8-2 1/4=-4 3/8-2 2/8=-6 5/8
5)-6 1/2-3 5/7=-6 7/14-3 10/14=-9 17/14=-10 3/14
6)-9-3 5/9=-12 5/9