помогите пж,дам 12 баллов!

Ответ:

468/25 = 18 18/25

Пошаговое объяснение:

(6 - 4/5) ÷ (1 1/3 - 1/4) × (2 1/3 + 1 2/5 + 1/6) = 26/5 ÷ (4/3 - 1/4) × (7/3 + 7/5 + 1/6) = 26/5 ÷ 13/12 × (7/3 + 7/5 + 1/6) = 26/5 ÷ 13/12 × 39/10 = 26/5 × 12/13 × 39/10 = 2/5 × 6/1 × 39/5 = 468/25 = 18 18/25