1/12/()=()*8/9=0.75:()=1/2+()
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1/12/()=()*8/9=0.75:()=1/2+()
1/12/()=()*8/9=0.75:()=1/2+()
1/12/()=()*8/9=0.75:()=1/2+()
答案不是唯一的
比如
1/12/(1/12)=(9/8)*8/9=0.75:(0.75)=1/2+(1/2)