混合计算:0.63+0.37/(2又2/3+1又4/9)

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混合计算:0.63+0.37/(2又2/3+1又4/9)

0.63+0.37/(2又2/3+1又4/9)
=0.63+0.37/(37/9)
=0.63+0.09
=0.64