Вычисли 1 целая 1/6 - 6 целых
1 1/6-6=1 1/6-5 6/6 =5 6/6-1 1/6=-4 5/6
1 1/6 - 6=-4 5/6
1 1/6 - 6=1 1/6 - 5 6/6 = (1-5) + (1/6-6/6) = -4 - 5/6= -4 5/6