( )(分数)=6/()=0.75=()%=折

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()(分数)=6/()=0.75=()%=折()(分数)=6/()=0.75=()%=折()(分数)=6/()=0.75=()%=折3/4=6/8=0.75=75%=7.5折

( )(分数)=6/()=0.75=()%=折
( )(分数)=6/()=0.75=()%=折

( )(分数)=6/()=0.75=()%=折
3/4=6/8=0.75=75%=7.5折