975脳0.25 9 3/4脳76-9.75

975\u00d70.25+9\u53c8\u56db\u5206\u4e4b\u4e09\u00d776-9.75 \u600e\u4e48\u7b97

975\u00d70.25+9\u53c83/4\u00d776-9.75
=9.75\u00d725+9\u53c83/4\u00d776-9.75
=9.75\u00d7\uff0825+76-1\uff09
=9.75\u00d7100
=975

975x0.25+9 又3/4x76-9.75
=9.75x100x0.25+9.75x76-9.75
=9.75x（100x0.25+76-1)
=9.75x（25+75）
=9.75x100
=975
谢谢，请采纳

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