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32.5×1.25+715×0.125+215÷8-2.55×12.5
人气:301 ℃ 时间:2020-06-12 21:59:50
解答
=325x0.125+715x0.125-255x0.125+215x0.125=(325+715-255+215)x0,125=1000x0.125=125

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