题目内容
| x+y |
| x-y+z |
| x+z |
| y-x-z |
| y+z |
| z+x-y |
原式=
-
-
=
=-
．
| x+y |
| x-y+z |
| x+z |
| x-y+z |
| y+z |
| x-y+z |
=
| x+y-x-z-y-z |
| x-y+z |
=-
| 2z |
| x-y+z |
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每日10分钟口算心算速算天天练系列答案
相关题目
每日10分钟口算心算速算天天练系列答案题目内容
| x+y |
| x-y+z |
| x+z |
| y-x-z |
| y+z |
| z+x-y |
| x+y |
| x-y+z |
| x+z |
| x-y+z |
| y+z |
| x-y+z |
| x+y-x-z-y-z |
| x-y+z |
| 2z |
| x-y+z |
每日10分钟口算心算速算天天练系列答案