Question

111- {3.[20 :5+4.(9-7)-24:(13-5)]+1}

Answer 1

111-{3.[20:5+4.3-24:8]+1}
111-{3.[4+12-3]+1}
111-{3.[16-3]+1}
111-{3.13+1}
111-{39+1}
111-40=
71

Answer 2

111-{3.[20:5+4.(9-7)-24:(13-5)]+1}
111-{3.[4+4.2-24:8]+1}
111-{3.[4+4.2-3]+1}
111-{3.[16-3]+1}
111-{3.13+1}
111-40
= 71