3/4 - 1/6 = 9/12 - 2/12 = 7/12
5/6 + 4/9 = 15/18 + 8/18 = 23/18
4/45 - 1/30 = 8/90 - 3/90 = 5/90 = 1/18
17/18 - 11/12 = 68/72 - 55/72 = 13/72
Таким образом, ответы:
3/4 - 1/6 = 7/12
5/6 + 4/9 = 23/18
4/45 - 1/30 = 1/18
17/18 - 11/12 = 13/72
3/4 - 1/6 = 9/12 - 2/12 = 7/12
5/6 + 4/9 = 15/18 + 8/18 = 23/18
4/45 - 1/30 = 8/90 - 3/90 = 5/90 = 1/18
17/18 - 11/12 = 68/72 - 55/72 = 13/72
Таким образом, ответы:
3/4 - 1/6 = 7/12
5/6 + 4/9 = 23/18
4/45 - 1/30 = 1/18
17/18 - 11/12 = 13/72