题目内容
下列方程变形中,移项正确的是············································································ ( )
A.从
,得
B.从
,得![]()
C.从
,得
D.从
,得![]()
答案:D
解析:
提示:
解析:
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提示:
| 移项后正负符号改变
|
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题目内容
下列方程变形中,移项正确的是············································································ ( )
A.从
,得
B.从
,得![]()
C.从
,得
D.从
,得![]()
|
|
| 移项后正负符号改变
|