1) =34/4:21/8=35/4*8/21=5/1*1/3=5/3=1 целая 2/3
2) =51/50:153/25=51/50*25/153=1/2*1/3=1/6
3) =25/8:15/4=25/8*4/15=5/2*1/3=5/6
4) =28/9:49/6=28/9*6/49=4/3*2/7=8/21
5) =21/11:16/3=24/11*3/16=3/11*3/2=9/22
6) =23/15:46/45=23/15*45/46=1/1*3/2=3/2=1 целая 1/2