(2)(1)÷(3)=(4)(9)÷(7)=(5)(6)÷(8) 对吗?
(8)(1)÷(9)=(2) (7)÷(3)=(5)(4)÷(6)
(8)(1)÷(9)=(2) (7)÷(3)=(5)(4)÷(6) (2)(1)÷(3)=(4)(9)÷(7)=(5)(6)÷(8)
(5)(6)÷(7)=(8) (9)÷(3)=(1)(2)÷(4)
56/7=89/3=12/4