Question

Найдите значение выражения: 3/7 * (1/4 + 7/12).

Answer 1

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

Answer 2

3/7*(1/4+7/12)=3/7*(3/12+7/12)=3/7*10/12=3/7×5/6=5/14