1целая 5/17* (7-2 целых 4/11)
1 5/17* (7-2 4/11)=1 5/17* (7-26/11)=22/17*(77/11-26/11)=22/17* 51/11=2/1*3/1 =6/1=6
1)7-2 4/11=6 11/11-2 4/11=4 7/11 2)1 5/17*4 7/11=22/17*51/11=2*3=6