Răspuns:
Explicație pas cu pas:
a = 5/2 + 11/3 - 23/4 = 30/12 + 44/12 - 69/12 = 5/12
b = 105/100*8/7 : 15.10 = 6/5 : 15/10 = 6/5*10/15 = 4/5
5/12 = 25/60
4/5 = 48/60
25/60 < 48/60
a < b
