天气预报 > 其他 > 为什么负一减一等于负2呢
为什么负一减一等于负2呢
更新时间: 2020-09-23 00:00:00  

负数减去正数的算法:两个数相加之后,在相加后的结果前面加负号即可。

负1减1先将先后两个1相加,结果为2,在此结果前面加上负号,即为负2。

负数减负数的算法:负负得正,两个减号相遇即可变为正数,再直接进行两数相加减即可。

关键词: 为什么 等于

为什么负一减一等于负2呢相关经验

天气预报

最新推荐

页面:/news/view-1352172/ | 耗时:0.9855 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=1352172 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1352172 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1352172 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1117920,2863527,183919,239437,3431206,987401,1465035,1069956,1116703,1123034,1095063,3347035,2676605,3005935,1978504,1085514,1304848,1131675,1089838,1126524,1083227,1102712,3306784,2852333,145445,2151096,188193,1050597,1113556,2693296) ORDER BY field (ArticleID,1117920,2863527,183919,239437,3431206,987401,1465035,1069956,1116703,1123034,1095063,3347035,2676605,3005935,1978504,1085514,1304848,1131675,1089838,1126524,1083227,1102712,3306784,2852333,145445,2151096,188193,1050597,1113556,2693296)