342. Найдите значение выражения: 3) (5 1/16 - 1 1/8) * (5/6 + 3/14)

3) (5 1/16 - 1 1/8) * (5/6 + 3/14) = (81/16 - 9/8) * (35/42 + 9/42) = (81/16 - 18/16) * 44/42 = 63/16 * 22/21 = (63*22)/(16*21) = 1386/336 = 231/56 = 4 7/56 = 4 1/8