腾讯视频烟雨濛濛25集:math ! math!!!!
来源:百度文库 编辑:高校问答 时间:2024/05/18 15:13:44
If y represents the tens digit and x the units digit of a two-digit number, then the number is representd by ........
the number is representd by 10y+x
the number is representd by 10y+x