9.75-1.53+8.53 = = = 简便方法脱式9.75-1.53+8.53= ==简便方法脱式

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9.75-1.53+8.53 = = = 简便方法脱式9.75-1.53+8.53= ==简便方法脱式
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9.75-1.53+8.53 = = = 简便方法脱式9.75-1.53+8.53= ==简便方法脱式
9.75-1.53+8.53 = = = 简便方法脱式
9.75-1.53+8.53
=
=
=
简便方法脱式

9.75-1.53+8.53 = = = 简便方法脱式9.75-1.53+8.53= ==简便方法脱式
9.75-1.53+8.53
= 9.75+(8.53-1.53)
= 9.75+7
= 16.75