1.一家菜店一星期盈亏情况如下(盈余为正):-150元,-100元,+300元,-250元,+900元,+1000元,-700元.问这家菜店本星期总的盈亏如何?2.已知x、y互为相反数,a、b互为倒数,m的绝对值为3.求代数式4(x+y)-
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![1.一家菜店一星期盈亏情况如下(盈余为正):-150元,-100元,+300元,-250元,+900元,+1000元,-700元.问这家菜店本星期总的盈亏如何?2.已知x、y互为相反数,a、b互为倒数,m的绝对值为3.求代数式4(x+y)-](/uploads/image/z/3844576-64-6.jpg?t=1.%E4%B8%80%E5%AE%B6%E8%8F%9C%E5%BA%97%E4%B8%80%E6%98%9F%E6%9C%9F%E7%9B%88%E4%BA%8F%E6%83%85%E5%86%B5%E5%A6%82%E4%B8%8B%EF%BC%88%E7%9B%88%E4%BD%99%E4%B8%BA%E6%AD%A3%EF%BC%89%EF%BC%9A-150%E5%85%83%2C-100%E5%85%83%2C%2B300%E5%85%83%2C-250%E5%85%83%2C%2B900%E5%85%83%2C%2B1000%E5%85%83%2C-700%E5%85%83.%E9%97%AE%E8%BF%99%E5%AE%B6%E8%8F%9C%E5%BA%97%E6%9C%AC%E6%98%9F%E6%9C%9F%E6%80%BB%E7%9A%84%E7%9B%88%E4%BA%8F%E5%A6%82%E4%BD%95%3F2.%E5%B7%B2%E7%9F%A5x%E3%80%81y%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2Ca%E3%80%81b%E4%BA%92%E4%B8%BA%E5%80%92%E6%95%B0%2Cm%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%E4%B8%BA3.%E6%B1%82%E4%BB%A3%E6%95%B0%E5%BC%8F4%EF%BC%88x%2By%EF%BC%89-)
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