Найдите значение выражений (21/22-5/11)-(22/39-3/13)
1. 21/22-5/11 = (21-10)/22 = 11/22 = 1/2 2. 22/39-3/13 = (22-9)/39 = 13/39 = 1/3 3. 1/2-1/3 = (3-2)/6 = 1/6