b/a,a/b,1/(a-b)通分

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b/a,a/b,1/(a-b)通分b/a,a/b,1/(a-b)通分b/a,a/b,1/(a-b)通分b/a,a/b,1/(a-b)通分b^(a-b)/ab(a-b),a^(a-b)/ab(a-b),

b/a,a/b,1/(a-b)通分
b/a,a/b,1/(a-b)通分

b/a,a/b,1/(a-b)通分

b/a,a/b,1/(a-b)通分

b^(a-b)/ab(a-b),a^(a-b)/ab(a-b),ab/ab(a-b)