Выполните действия б)7 1/10--3 1/6 в)2 2/5*5/24 г)7/30:1 2/3
7 1/10 - (-3 1/6 ) = 7 1/10 + 3 1/6 = 7 3/30 + 3 5/30 = = 10 8/30 = 10 4/15 2 2/5 * 5/24 = 12/5 * 5/24 = (1*1)/(1*2) = 1/2 7/30 : 1 2/3 = 7/30 : 5/3 = 7/30 * 3/5 = 7/50