用简便方法计算11/12×13/16+13/12×1/16(一定用简便,

问题描述:

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