Б) 5/2/3; г) 5/17/15/34; е)1/2-1/6/2; и)1/2+1/6/1/2-1/6;

Б) 5/2/3=5/2*3=5/6
г)5/17/15/34=5/17*15*34=1/17*3*34=1/1734
е)1/2-1/6/2=1/2-1/6*2=1/2-1/12=6-1/12=5/12
и)1/2+1/6/1/2-1/6=1/2+1/6*1*2-1/6=1/2+1/12-1/6=6+1-2/12=5/12