[13.5+(11+2.25)/(1/&)-1/7]*7/6=293/12 求&
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![[13.5+(11+2.25)/(1/&)-1/7]*7/6=293/12 求&](/uploads/image/z/9462015-63-5.jpg?t=%5B13.5%2B%2811%2B2.25%29%2F%281%2F%26%29-1%2F7%5D%2A7%2F6%3D293%2F12+%E6%B1%82%26)
[13.5+(11+2.25)/(1/&)-1/7]*7/6=293/12 求&
[13.5+(11+2.25)/(1/&)-1/7]*7/6=293/12 求&
[13.5+(11+2.25)/(1/&)-1/7]*7/6=293/12 求&
&=4/7
13.5+13.25&-1/7=293/14
13.25&=53/7
53/4&=53/7
&=4/7