[25/24 - (9 + 4 - 18)] ÷5= 5/24 + 1 = 29/24
[1又1/24-(3/8+1/6-3/4)×24]÷5=[1+1/24-24×(3/8)-24×(1/6)+24×(3/4)]÷5=[1+1/24-9-4+18]÷5=145/24÷5=29/24;
