2. ६ 3 +2½-3½ 3 4 214​

(3/4 + 2/3 – 3/2) ÷ 2/4 =

(9/12 + 8/12 – 18/12) ÷ 1/2 =

(17/12 – 18/12) ÷ 1/2 =

-1/12 ÷ 1/2 =

-1/12 × 2/1 =

-2/12 = (–1/6)