(-4)-(-7)+29+(-28)括号里面的减是负号,不是括号的减号是减号,还有这些题目和上面一样,(1.—...)是序号的意思.1.(-4.5)—(-2.5)+27—(2.6)2.(-5)+(-27)—(-26)+(-2.7)3.(-2)—(-4)
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![(-4)-(-7)+29+(-28)括号里面的减是负号,不是括号的减号是减号,还有这些题目和上面一样,(1.—...)是序号的意思.1.(-4.5)—(-2.5)+27—(2.6)2.(-5)+(-27)—(-26)+(-2.7)3.(-2)—(-4)](/uploads/image/z/5276987-35-7.jpg?t=%28-4%29-%28-7%29%2B29%2B%28-28%29%E6%8B%AC%E5%8F%B7%E9%87%8C%E9%9D%A2%E7%9A%84%E5%87%8F%E6%98%AF%E8%B4%9F%E5%8F%B7%2C%E4%B8%8D%E6%98%AF%E6%8B%AC%E5%8F%B7%E7%9A%84%E5%87%8F%E5%8F%B7%E6%98%AF%E5%87%8F%E5%8F%B7%2C%E8%BF%98%E6%9C%89%E8%BF%99%E4%BA%9B%E9%A2%98%E7%9B%AE%E5%92%8C%E4%B8%8A%E9%9D%A2%E4%B8%80%E6%A0%B7%2C%EF%BC%881.%E2%80%94...%EF%BC%89%E6%98%AF%E5%BA%8F%E5%8F%B7%E7%9A%84%E6%84%8F%E6%80%9D.1.%EF%BC%88-4.5%EF%BC%89%E2%80%94%EF%BC%88-2.5%EF%BC%89%2B27%E2%80%94%EF%BC%882.6%EF%BC%892.%EF%BC%88-5%EF%BC%89%2B%EF%BC%88-27%EF%BC%89%E2%80%94%EF%BC%88-26%EF%BC%89%2B%EF%BC%88-2.7%EF%BC%893.%EF%BC%88-2%EF%BC%89%E2%80%94%EF%BC%88-4%EF%BC%89)
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