( 16 : 1 1/3 - 4 5/9 + 2 3/4 : 11 + 3 1/4) : (( 7 1/3 - 6 5/9 ) * 5/28 )=
по действиям
16 : 1 1/3=16:4/3=16*3/4=4*3=12
2 3/4:11=11/4*1/11=1/4
12-4 5/9+1/4+3 1/4=12-4 5/9+3 2/4=12-4 5/9+3 1/2=12-4 10/18+3 9/18=
=11 -10/18+9/18=11-1/18=10 17/18
7 1/3 - 6 5/9 =7 3/9- 6 5/9=1+3/9-5/9=1-2/9=7/9
7/9*5/28=1/9*5/4=5/36
10 17/18:5/36=197/18*36/5=197/1*2/5=394/5=78,8