номер 1082 , 1083 , 1085

182.
1) 8*(4/11+7/11) =8
2) 5*(1/7+6/7)=5
3) 6/13*(1/5+1/4)=6/12*9/20=9/40
4)5/6*(5/8-1/4)=5/6*7/8=36/48=9/12=3/4
5)(3/5-3/5)*2/7=2/7
6)1/7*(1/8+1/6)=1/7*7/24=1/24