-3/2*-4/3*-5/4*-6/5*……*11/10

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-3/2*-4/3*-5/4*-6/5*……*11/10
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-3/2*-4/3*-5/4*-6/5*……*11/10
-3/2*-4/3*-5/4*-6/5*……*11/10

-3/2*-4/3*-5/4*-6/5*……*11/10
-3/2*-4/3*-5/4*-6/5*……*11/10
过程是足一的约分
=-11/2

2 3 4 5 6 2+5+4-3-6 2,3,4,5,6 5+3-2+4-6 2,3,4,5,6, 2,3,4,5,6, 2,3,4,5,6, 2,3,4,5,6 2 3 4 5 6 2,3,4,5,6 2 3 4 5 6 2,3,4,5,6 (-5/4+5/6-3/2+11/4)/6/5 5/6×（3/4+2/5） 4/6+5/6+2/3 3,4,5,6, 3 4 5 6 3,4,5,6,