5.4+6.9x3-(25-2.5)能简算的要简算
答案:3 悬赏:10 手机版
解决时间 2021-11-11 22:34
- 提问者网友：欺烟
- 2021-11-11 06:39
5.4+6.9x3-(25-2.5)能简算的要简算
最佳答案
- 五星知识达人网友：慢性怪人
- 2021-11-11 06:56
5.4+6.9x3-(25-2.5)
=5.4+7x3-0.1x3-25+2.5
=5.4+21-0.3-25+2.5
=5.1-4+2.5
=1.1+2.5
=3.6
=5.4+7x3-0.1x3-25+2.5
=5.4+21-0.3-25+2.5
=5.1-4+2.5
=1.1+2.5
=3.6
全部回答
- 1楼网友：封刀令
- 2021-11-11 09:58
如下
- 2楼网友：枭雄戏美人
- 2021-11-11 08:36
5.4+6.9x3-(25-2.5)
=5.4+(7-0.1)x3-25+2.5
=5+0.4+21-0.3-25+2+0.5
=(5+21-25+2)+(0.4-0.3+0.5)
=3+0.6
=3.6。
=5.4+(7-0.1)x3-25+2.5
=5+0.4+21-0.3-25+2+0.5
=(5+21-25+2)+(0.4-0.3+0.5)
=3+0.6
=3.6。
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