
3/4+4/5x5/6怎么简便
2014-10-28
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3/4+4/5x5/6
=3/4+20/30
=3/4+2/3
=1-1/4+1-1/3
=2-(4+3)/12
=2-7/12
=2-(6+1)/12
=1.5-1/12
=1.5-(1.2-0.2)/12
=1.5-0.1+0.2/12
=1.4+0.2/12
=1.41+0.08/12
=3/4+20/30
=3/4+2/3
=1-1/4+1-1/3
=2-(4+3)/12
=2-7/12
=2-(6+1)/12
=1.5-1/12
=1.5-(1.2-0.2)/12
=1.5-0.1+0.2/12
=1.4+0.2/12
=1.41+0.08/12
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