计算: 13×2/3-5/7×0.35-1/3×(-13)-2/7×0.35
答案:2 悬赏:60 手机版
解决时间 2021-04-04 01:33
- 提问者网友:我没有何以琛的痴心不悔
- 2021-04-03 15:55
计算: 13×2/3-5/7×0.35-1/3×(-13)-2/7×0.35
最佳答案
- 五星知识达人网友:雾月
- 2021-04-03 16:10
13×2/3-5/7×0.35-1/3×(-13)-2/7×0.35
=13×(2/3+1/3)-(5/7+2/7)×0.35
=13-0.35
=12.65
=13×(2/3+1/3)-(5/7+2/7)×0.35
=13-0.35
=12.65
全部回答
- 1楼网友:鸽屿
- 2021-04-03 17:25
=13×2/3-5/7×0.35-2/7×0.35-1/3×(-13)
=13×2/3+1/3×13-[(5/7×0.35)+(2/7×0.35)]
=13×(2/3+1/3)-0.35×(5/7+2/7)
=13-0.35
=12.65
=13×2/3+1/3×13-[(5/7×0.35)+(2/7×0.35)]
=13×(2/3+1/3)-0.35×(5/7+2/7)
=13-0.35
=12.65
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