Решите плиз.Номер 1191.Только 2,4,6

.....вот......^_^......

2)  1.1/4*2/5=1/2 1/2-1/3=(3-2)/6=1/6 4)  (5/6)/(1/3)=2/5 2/5+1.3/8=(16+23)/40=39/40 6)  (2.1/3)/(1.5/9)=3/2 3/2-5/6=(9-5)/6=4/6=2/3