计算:(2a-4)分之(3-a)除(a+2-(a-1)分之5)(2a-4)分之(3-a)除(a+2-(a-2)分之5)

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计算:(2a-4)分之(3-a)除(a+2-(a-1)分之5)(2a-4)分之(3-a)除(a+2-(a-2)分之5)

计算:(2a-4)分之(3-a)除(a+2-(a-1)分之5)(2a-4)分之(3-a)除(a+2-(a-2)分之5)
计算:(2a-4)分之(3-a)除(a+2-(a-1)分之5)
(2a-4)分之(3-a)除(a+2-(a-2)分之5)

计算:(2a-4)分之(3-a)除(a+2-(a-1)分之5)(2a-4)分之(3-a)除(a+2-(a-2)分之5)
=(3-a)/2(a-2)÷{[(a+2)(a-2)-5]/(a-1)}
=(3-a)/2(a-2)*(a-1)/(a+3)(a-3)
=-(a-1)/2(a-2)(a+3)