50. Найдите значение выражения

5/6 + 7/12 : 7/2 = 5/6 + 7/12 * 2/7 = 5/6 + (7/7) * (2/12) = 5/6 + 1 * 1/6 = 5/6 + 1/6 = 6/6 = 1