Уравнение:11/14+5/7-1 решение
11/14+5/7-1=11/14+10/14-1=21/14-1=3/2-2/2=1/2
11/14 + 5/7 - 1 = 11/14 + 10/14 - 1 = 21/14 - 1 = 21/14 -14/14 = 7/14 = 1/2