-56×186-28﹙-88﹚+14×42的简便运算.要有清楚的步骤.
来源:学生作业帮 编辑:搜搜考试网作业帮 分类:数学作业 时间:2024/08/10 03:10:22
-56×186-28﹙-88﹚+14×42的简便运算.要有清楚的步骤.
![-56×186-28﹙-88﹚+14×42的简便运算.要有清楚的步骤.](/uploads/image/z/16677458-26-8.jpg?t=-56%C3%97186-28%EF%B9%99-88%EF%B9%9A%2B14%C3%9742%E7%9A%84%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97.%E8%A6%81%E6%9C%89%E6%B8%85%E6%A5%9A%E7%9A%84%E6%AD%A5%E9%AA%A4.)
题目是-56*186-28*(-88)+14*42 么? 再答: -56*186-28*(-88)+14*42 =-56*186+28*88+14*42 =-28*2*186+28*88+28*21 =-28*(186-88+186-21) =-28*(186-86+186-21-2) =-28*(100+163) =-28*(200+60+3) =-28*200-28*60-28*3 =-5600-1680-84 =-7364 看起来还是有点麻烦...