26.64+6.37-18.64+13.63简便计算
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26.64+6.37-18.64+13.63简便计算
26.64+6.37-18.64+13.63简便计算
26.64+6.37-18.64+13.63简便计算
(26.64-18.64)+(6.37+13.63)=8+20=28
(26.64-18.64)+(6.37+13.63)=28
26.64-18.64+(6.37+13.63)=8+20=28