Question

4/75:(4/5*1 1/4):(23/25-13/15)*1 1/15-1/15

Answer 1

4/75:(4/5*5/4):4/75*1 1/15-1/15
4/75:1:4/75*1 1/15-1/15
1*1 1/15-1/15
1 1/15-1/15
16/15 - 1/15 =1