1/3a^2b-1/6ab
=1/3ab(a-1/2)
=3ab(a/9-1/18)
（1/3a^2b-1/6ab)/(a/9-1/18 ）=3ab
（1/3a^2b-1/6ab)/( ）=3ab
（1/3a^2b-1/6ab)/( ）=3ab
問括號里填什么?
問括號里填什么?
數(shù)學人氣：165 ℃時間：2020-05-04 22:30:37
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