4/14+7/14+c,если c= 1/14,2,14,3/14

4/14+7/14+1/14 = (4+7+1)/14 = 12/14 = 6/7;4/14+7/14+2/14 = (4+7+2)/14 = 13/14;4/14+7/14+3/14 = (4+7+3)/14 = 14/14 = 1.

Ответ:

Пошаговое объяснение:

4/14+7/14+1/14=12/14=6/7

4/14+7/14+2/14=13/14

4/14+7/14+3/14=14/14=1