Сократите:
4*5/3*6, 15*3/11*10, 14*9/15*7, 2*3/9*8

4*5/3*6 = 2*5/3*3 = 10/9;15*3/11*10 =3*3/11*2 = 9/22;14*9/15*7 = 2*3/5*1 = 6/5;2*3/9*8 = 1*1/3*4 = 1/12;