某商店库存的花布比白布的2倍多20米,如果每天卖出30米白布和40米花布,几天以后,白布全部卖完,而花布还剩140米.原来库存这两种布各多少米?解方程.
某商店库存的花布比白布的2倍多20米,如果每天卖出30米白布和40米花布,几天以后,白布全部卖完,而花布还剩140米.原来库存这两种布各多少米?解方程.
数学人气:313 ℃时间:2020-03-27 01:58:50
优质解答
设商店有白布x米,则花布有(2x+20)米, 2x+20−14040=x30, (2x+20-140)×3=x×4, ( 2x-120)×3=4x, &nb...
我来回答
类似推荐
猜你喜欢
- 1how long has it been since I have seen one!是感叹句吗
- 2Shall we have our class metting tomorrow?(反意疑问句)let's have our class metting tomorrow,____ ____?
- 3形容事物高的四字词语
- 4今天是星期四,妈妈在今天之后第50天要去外地的外婆家.那天是星期几?妈妈周六周日休息到那天她需要请假吗
- 5二元一次方程 5x-8y=4 3x-2y=-6的解(要过程)
- 6every person is like that.怎么翻译啊?LIke
- 7make shanghai more beautiful 英语作文
- 8who,whom与whose的意义及用法和区别
- 9take time to do / spend time doing 区别
- 10要配置0.5mol/lNZOH溶液500ml,需要取NAOH体多少克?