7.5*2.3+1.9*2.5+12.5*0.4 简便预算
答案:1 悬赏:80 手机版
解决时间 2021-11-08 14:35
- 提问者网友：夢醒日落
- 2021-11-07 19:42
7.5*2.3+1.9*2.5+12.5*0.4 简便预算
最佳答案
- 五星知识达人网友：妄饮晩冬酒
- 2021-11-07 20:25
7.5*2.3+1.9*2.5+12.5*0.4
=2.5*3*2.3+2.5*1.9+2.5*5*0.4
=2.5(6.9+1.9+2)
=2.5*10.8
=2.5*10+2.5*0.8
=25+2
=27
=2.5*3*2.3+2.5*1.9+2.5*5*0.4
=2.5(6.9+1.9+2)
=2.5*10.8
=2.5*10+2.5*0.8
=25+2
=27
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