(4/9+1 1/6)*1 1/4-3 1/9:2 1/3
(4/9+1 1/6)×1 1/4-3 1/9:2 1/3=(4/9+7/6)×5/4-28/9:7/3=(8+21)/18×5/4-28/9×3/7=29/18×5/4-4/3=145/72-4/3=(145-96)/72=49/72