6/7:3/5*1 2/5 11/23*3 2/7:5 1/2 1 1/8*(9 1/3:1 3/4) Пжжжж
6/7 : 3/5 * 1 2/5=6/7 * 5/3 * 7/5=6/3=2 11/23 * 3 2/7 : 5 1/2=11/23 * 23/7 * 2/11=2/7 1 1/8 * (9 1/3 : 1 3/4)=9/8 * 28/3 * 4/7=3*2=6