一座楼房每上一层要走18个台阶,到小明家要走72个台阶,小明家在几层?
一座楼房每上一层要走18个台阶,到小明家要走72个台阶,小明家在几层?
数学人气:141 ℃时间:2019-11-22 20:54:59
优质解答
应该是5层
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