ت) $(-2) - rac{3}{4 + rac{3}{1 - rac{1}{5}}} = (-2) - rac{3}{4 + rac{3}{rac{4}{5}}} = (-2) - rac{3}{4 + rac{15}{4}} = (-2) - rac{3}{rac{31}{4}} = (-2) - rac{12}{31} = rac{-62 - 12}{31} = rac{-74}{31}$