Вычислите разность 1-1/5 1-3/7 1-7/9 1-3/10
1 - 1/5 = 5/5 - 1/5 = 4/5 1 - 3/7 = 4/7 1 - 7/9 = 2/9 1 - 3/10 = 7/10