2 3/4 :11 +22 1/50 :6 - 53,77:19

2 3/4:11=11/4*1/11=1/4
22 1/50:6=1101/50*1/6=1101/300=367/100
53,77:19=2,83
1/4+367/100=25/100+367/100=392/100=3,92
3,92-2,83=1,09
Ответ: 1,09