将下列各式写成省略加号的和的形式,并按括号内要求交换加数的位置.(1) (+16)+(-29)-(-7)-(+11)+(+9);(使符号相同的加数在一起)(2) (-3.1)-(-4.5)+(+4.4)-(+1.3)+(-2.5);(使
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![将下列各式写成省略加号的和的形式,并按括号内要求交换加数的位置.(1) (+16)+(-29)-(-7)-(+11)+(+9);(使符号相同的加数在一起)(2) (-3.1)-(-4.5)+(+4.4)-(+1.3)+(-2.5);(使](/uploads/image/z/377603-35-3.jpg?t=%E5%B0%86%E4%B8%8B%E5%88%97%E5%90%84%E5%BC%8F%E5%86%99%E6%88%90%E7%9C%81%E7%95%A5%E5%8A%A0%E5%8F%B7%E7%9A%84%E5%92%8C%E7%9A%84%E5%BD%A2%E5%BC%8F%2C%E5%B9%B6%E6%8C%89%E6%8B%AC%E5%8F%B7%E5%86%85%E8%A6%81%E6%B1%82%E4%BA%A4%E6%8D%A2%E5%8A%A0%E6%95%B0%E7%9A%84%E4%BD%8D%E7%BD%AE.%281%EF%BC%89+%EF%BC%88%2B16%EF%BC%89%2B%EF%BC%88-29%EF%BC%89-%EF%BC%88-7%EF%BC%89-%EF%BC%88%2B11%EF%BC%89%2B%EF%BC%88%2B9%EF%BC%89%EF%BC%9B%EF%BC%88%E4%BD%BF%E7%AC%A6%E5%8F%B7%E7%9B%B8%E5%90%8C%E7%9A%84%E5%8A%A0%E6%95%B0%E5%9C%A8%E4%B8%80%E8%B5%B7%EF%BC%89%EF%BC%882%EF%BC%89+%EF%BC%88-3.1%EF%BC%89-%EF%BC%88-4.5%EF%BC%89%2B%EF%BC%88%2B4.4%EF%BC%89-%28%2B1.3%29%2B%28-2.5%29%EF%BC%9B%28%E4%BD%BF)
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