页面加载中...
1、被减数、减数、差之和为N,差为减数的M倍,问差为多少? x=NM/2(M+1) 2、甲乙两堆苹果,从甲拿出N个到乙,两堆相等;从乙拿出N个到甲,则甲是乙的2倍,问甲乙之和为多少? a+b=12N,其中a=7N,b=5N
2007/02/19 19:18http://img817.photo.163.com/2233445p/113949794/2751048588.gifhttp://img817.photo.163.com/2233445p/113949794/2751047062.g
2007/02/16 16:18http://img817.photo.163.com/2233445p/113949794/2751048588.gifhttp://img817.photo.163.com/2233445p/113949794/2751047062.g
2007/02/16 15:48