Найдите разность: 1/15 - 1/17, 12/19 - 3/8, 17/18 - 5/6

Question

Найдите разность: 1/15 - 1/17, 12/19 - 3/8, 17/18 - 5/6

Answer 1

1\15-1\17 = (17-15)\255 = 2\255
12\19-3\8 = (96-57)\152 = 39\152
17\18-5\6 =(17-15)\18 = 2\18 = 1\9