вычислите : 14/25 * 10/21 6*2 1/3 1/2*1 1/9

Ответы:

14/25 * 10/21 = 14*10/25*21 = 140/525 = 4/15



6*2 1/3 = 6*7/3 = 6*7/1*3 = 42/3 = 14



1/2*1 1/9 = 1/2*10/9 = 1*10/2*9 = 10/18 = 5/9