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好吧问答库 > 139×3-39×3+50×3怎么简单怎么算？

139×3-39×3+50×3怎么简单怎么算？

2025年04月06日 15:30

有4个网友回答

网友（1）：

利用分配律逆运算简单快捷。
139x3-39x3+50x3（依据分配律逆运算得：
=3x（139-39+50）
=3x(100+50)
=3x150
=450

网友（2）：

网友（3）：

原式
＝（139－39）×3+50×3
＝100×3+150
＝450

网友（4）：

=(139一39+50)X3
＝150×3
=450

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