通分:(1)1/x(y-x),1/2x-2y(2)5/2(x-2),4/3(2-x)²(3)x/a(x-y),y/b(y-x)
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![通分:(1)1/x(y-x),1/2x-2y(2)5/2(x-2),4/3(2-x)²(3)x/a(x-y),y/b(y-x)](/uploads/image/z/5441798-38-8.jpg?t=%E9%80%9A%E5%88%86%EF%BC%9A%EF%BC%881%EF%BC%891%2Fx%EF%BC%88y-x%EF%BC%89%2C1%2F2x-2y%EF%BC%882%EF%BC%895%2F2%EF%BC%88x-2%EF%BC%89%2C4%2F3%EF%BC%882-x%EF%BC%89%26%23178%3B%EF%BC%883%EF%BC%89x%2Fa%EF%BC%88x-y%EF%BC%89%2Cy%2Fb%EF%BC%88y-x%EF%BC%89)
通分:(1)1/x(y-x),1/2x-2y(2)5/2(x-2),4/3(2-x)²(3)x/a(x-y),y/b(y-x)
通分:(1)1/x(y-x),1/2x-2y(2)5/2(x-2),4/3(2-x)²(3)x/a(x-y),y/b(y-x)
通分:(1)1/x(y-x),1/2x-2y(2)5/2(x-2),4/3(2-x)²(3)x/a(x-y),y/b(y-x)
(1)1/x(y-x),1/2x-2y
-2/2x(x-y),x/2x(x-y)
(2)5/2(x-2),4/3(2-x)²
15(x-2)/6(x-2)²,8/6(x-2)²
(3)x/a(x-y),y/b(y-x)
b x/ab(x-y),-ay/ab(x-y)
自己去完成的呀