( )÷8=( )/( )=15:( )=0.75=( ):12=( )%

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()÷8=()/()=15:()=0.75=():12=()%()÷8=()/()=15:()=0.75=():12=()%()÷8=()/()=15:()=0.75=():12=()%(6)÷8=(

( )÷8=( )/( )=15:( )=0.75=( ):12=( )%
( )÷8=( )/( )=15:( )=0.75=( ):12=( )%

( )÷8=( )/( )=15:( )=0.75=( ):12=( )%
( 6)÷8=(3 )/( 4)=15:( 20)=0.75=(9 ):12=( 75)%

( 6)÷8=( 3)/(4)=15:(20)=0.75=(9):12=(75 )%

丽丽补给梅梅13元,每盒英语录音磁带要多少元? 各自付了10盒磁带钱,13/(10-8)=6.5 想不通的话设每盒x元丽丽12x,小梅8x,两人各实付10x