Вычислите: 6целых 1/4 - (3целых 2/5+3/8)
6_1/4 - (3_ 2/5+3/8) = 6_1/4 - (3_16/40 + 15/40)= 6_1/4 - 3_31/40 = 6_10/40-3_31/40 = 5_50/40-3_31/40=2_19/40