Question

Обчисли: (13 4/7 - 1/6) + 6 1/2

Answer 1

Ответ:       19 19/21.

Пошаговое объяснение:

(13 4/7 - 1/6) + 6 1/2 => НОК (7;6) = 42 => (13 24/42-7/42) + 6 1/2 =

= 13 (24-7)/42 + 6 1/2 = 13 17/42 + 6 1/2 => НОК(42;2) = 42 =>

13 17/42+6 21/42 = 19 38/42 = 19 19/21.