用简便方法计算11/12×13/16+13/12×1/16(一定用简便,
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用简便方法计算11/12×13/16+13/12×1/16(一定用简便,
用简便方法计算11/12×13/16+13/12×1/16
(一定用简便,
用简便方法计算11/12×13/16+13/12×1/16(一定用简便,
11/12×13/16+13/12×1/16 = (11*13)/(12*16)+(1*13)/(12*16)=12*13/(12*16)=13/16