(-28.36)+(-6.22)+(+34.58)+(-11又3/4)+(+11.75)

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(-28.36)+(-6.22)+(+34.58)+(-11又3/4)+(+11.75)
(-28.36)+(-6.22)+(+34.58)+(-11又3/4)+(+11.75)

(-28.36)+(-6.22)+(+34.58)+(-11又3/4)+(+11.75)
等于0