Ответ:
Пошаговое объяснение:
1) 15/18 * 6/5 = 1
2) 4/8 : 7/4= 4/8 * 4/7 = 4/14 = 2/7
3) 8/9 + 2/3= 8/9 + 6/9 = 14/9 = 1 5/9
4) 4/5 + 1/3= 12/15 + 5/15 = 17/15 = 1 2/15
5) 8/9 - 3/18= 16/18 - 3/18 = 13/18
6) 2/4 +2/3= 6/12 + 8/12 = 14/12 = 1 2/12 = 1 1/6
7) 18/22 : 4/2= 18/22 * 2/4 = 9/22
8) 8/4 * 2/4= 1