> 其他 >
2008+2009×2007/2008×2009-1
人气:282 ℃ 时间:2020-04-28 03:41:04
解答
2008+2009×2007/2008×2009-1
=2008+2009/(2008×2009)×2007-1
=2008+2007/2008-1
=2007又2007/2008
推荐
猜你喜欢
© 2025 79432.Com All Rights Reserved.
电脑版|手机版