没学过负数悲剧啊!Determine whether the resultss of the following expressions are positive or negative number.-2+8,-8+2,(+2)+(+8),(-2)+(-8),(-2)-(-8),(-2)×(+8),(-8)÷(-2) 如果能一个一个来解释怎么做就更好了,
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![没学过负数悲剧啊!Determine whether the resultss of the following expressions are positive or negative number.-2+8,-8+2,(+2)+(+8),(-2)+(-8),(-2)-(-8),(-2)×(+8),(-8)÷(-2) 如果能一个一个来解释怎么做就更好了,](/uploads/image/z/13295258-26-8.jpg?t=%E6%B2%A1%E5%AD%A6%E8%BF%87%E8%B4%9F%E6%95%B0%E6%82%B2%E5%89%A7%E5%95%8A%21Determine+whether+the+resultss+of+the+following+expressions+are+positive+or+negative+number.-2%2B8%2C-8%2B2%2C%28%2B2%29%2B%28%2B8%29%2C%28-2%29%2B%28-8%29%2C%28-2%29-%28-8%29%2C%28-2%29%C3%97%28%2B8%29%2C%28-8%29%C3%B7%28-2%29+%E5%A6%82%E6%9E%9C%E8%83%BD%E4%B8%80%E4%B8%AA%E4%B8%80%E4%B8%AA%E6%9D%A5%E8%A7%A3%E9%87%8A%E6%80%8E%E4%B9%88%E5%81%9A%E5%B0%B1%E6%9B%B4%E5%A5%BD%E4%BA%86%2C)
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