Найдите значение выражения: 3/7 * (1/4 + 7/12).
3/7*(1/4+7/12)=3/7*(3/12+7/12)=3/7*10/12=3/7×5/6=5/14
3/7 * ( 1/4 + 7/12 ) = = 3/7 * ( 3/12 + 7/12) = = 3/7 * 10/12 = = 3/7 * 5/6 = (3*5) / (7*6) = = 15/42 = 5/14