(-270)×0.25+0.25×21.5+(-8.5)×(-25%)等于几-147×(0.1250+253×0.125+72×(-0.25)

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(-270)×0.25+0.25×21.5+(-8.5)×(-25%)等于几-147×(0.1250+253×0.125+72×(-0.25)(-270)×0.25+0.25×21.5+(-8.5)×

(-270)×0.25+0.25×21.5+(-8.5)×(-25%)等于几-147×(0.1250+253×0.125+72×(-0.25)
(-270)×0.25+0.25×21.5+(-8.5)×(-25%)等于几
-147×(0.1250+253×0.125+72×(-0.25)

(-270)×0.25+0.25×21.5+(-8.5)×(-25%)等于几-147×(0.1250+253×0.125+72×(-0.25)
第二个公式少了个括号,你忽悠人啊

第一个:=(-270+21.5+8.5)×1/4=-240×1/4=-60
第二个:我麻烦你先把题目写对了……