Вычислите -1/3-2/3; -1/4-5/7; -1/8-3/4; -6 целых1/2-3 целых5/7

-1/3 - 2/3= - 3/3= - 1

- 1/4 - 5/7= - 7/28 - 20/28= - 27/28

 - 1/8 - 3/4= - 1/8 - 6/8= - 7/8

- 6 1/2 - 3 5/7= - 6 7/14 - 3 10/14= - 9 17/14= - 10 3/14