0.75=6÷()=():12=15/()=()%
0.75=6÷()=():12=15/()=()%
15÷()=()分之12=0.75
15÷( )=多少分之12=0.75
1.()÷8=()—()=15:()=0.75=():12=()%
0.75=75%=6分之( )=12÷( )=( )
6÷( )=12/( )=( ):12=0.75
()÷8=()分之()=15:()=0.75=():12()%
()÷16=()分之15=0.75=21÷()=12分之()
( )÷8=几分之几=15:( )=0.75=( ):12=( )%
15除以()=四分之三=0.75=6:()=()分之12
6/()=12分钟()=15:()0.75=()%
15÷( )=0.75=( )%=24/( )