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78x101-2x39的简便运算怎么写?

2025-03-16 12:55:05

推荐回答（4个）

回答1：

你好此题简便运算方法为:78x101-2x39
=78x101-78
=78x（101-1）
=78x100
=7800

回答2：

78x101-2x39＝39x2x101一2x39
＝39x202一2x39
＝39x（202一2）
＝39x200
＝7800

回答3：

78x101-2ⅹ39的简便运算，78x101-2ⅹ39=78x101-78=78x(101-1)=78x100=7800。

回答4：

78*101-2*39
=78*101-78
=78*（101-1）
=78*100
=7800

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