посчитайте УЖЕ 2 ЧАСА РЕШАЮ НЕ МОГУ​

:

= 29/6 * (19/8а - 131/18b) - (7a - 3/8b) =

551/48a - 3799/108b - 7a + 3/8b =

11. 23/48a - 35. 19/108b - 7a + 3/8b =

4. 23/48a - 35. 38/216b + 81/216b =

4. 23/48a - 34. 254/216b + 81/216b =

4. 23/48a - 34. 173/216b