您好,38.2-7.08-20.7-2.22用简便方法计算
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您好,38.2-7.08-20.7-2.22用简便方法计算您好,38.2-7.08-20.7-2.22用简便方法计算您好,38.2-7.08-20.7-2.22用简便方法计算38.2-7.08-20.
您好,38.2-7.08-20.7-2.22用简便方法计算
您好,38.2-7.08-20.7-2.22用简便方法计算
您好,38.2-7.08-20.7-2.22用简便方法计算
38.2-7.08-20.7-2.22
=38.2-(7.08+20.7+2.22)
=38.2-30
=8.2