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-3-[-5+(1-0.2x3/5)÷(-2)]计算
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-3-[-5+(1-0.2x3/5)÷(-2)]计算
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答案和解析
-3-[-5+(1-0.2x3/5)÷(-2)]
=-3-[-5+(1-0.12)÷(-2)]
=-3-[-5+0.88÷(-2)]
=-3-[-5-0.44]
=-3+5.44
=2.44
=-3-[-5+(1-0.12)÷(-2)]
=-3-[-5+0.88÷(-2)]
=-3-[-5-0.44]
=-3+5.44
=2.44
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