АП
Андрей Полозов
4 целых 1/22
Ответ
7 5/22 - 3 2/11 =
= (7*22+5)/22 - (3*11+2)/11 =
= 159/22 - 35/11 * (2/2) =
= 159/22 - (35*2) /(11*2) =
= 159/22 - 70/22 =
= (159-70) /22 = 89/22 =
= (88+1)/22 =
= 88/22 + 1/22
= 4 + 1/22 = 4 1/22