下列实数运算中正确的是[]A.B.C.D.-八年级数学

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• 计算：-八年级数学
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• -九年级数学
• 下列计算正确的是[]A.B.C.D.-九年级数学
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• 下列计算中，正确的是[]A.B.C.D.-九年级数学
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• 计算：-八年级数学
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• 计算（1）+-=（2）-+=-八年级数学
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• 计算：=（）。-九年级数学
• 下列运算正确的是[]A．=-13B．-=1C．-3+=-2D．=±6-八年级数学
• 计算：-八年级数学
• +-+=-八年级数学
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• 计算的结果是[]A．B．2C．D．1.4-八年级数学
• 计算：+|-|+（-2）3-+-八年级数学
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