简便方法计算 (27又27/55+9又9/11)除以(9又9/55+3又3/11)
问题描述:
简便方法计算 (27又27/55+9又9/11)除以(9又9/55+3又3/11)
答
﹙27又27/55+9又9/11﹚÷﹙9又9/55+3又3/11﹚
=3×﹙9又9/55+3又3/11﹚÷﹙9又9/55+3又3/11﹚
=3