例题1: ÷ ÷ 12÷0.6 ÷5/6 = x x =12 x x = =24 例题2: (35+) ÷5 ( + ) ÷ =35÷5+÷5 =÷ + ÷ =7+ =40+18 =7 =58 例题3: ÷ + ÷ ÷ + ÷ =( + ) ÷ =( + ) ÷ =1 ÷ =1 ÷ = =9