1/2+1/3+1/4+1/6+1/12+1/48+1/56
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xA
0!$McmR6,a*!/%.uQ$_ G@:
61<軣\L<U,%Wێ-`
1/2+1/3+1/4+1/6+1/12+1/48+1/56
1/2+1/3+1/4+1/6+1/12+1/48+1/56
1/2+1/3+1/4+1/6+1/12+1/48+1/56
1/2(24/48)+1/3(16/48)+1/4(12/48)+1/6(8/48)+1/12(4/48)+1/48+1/56
=72/48(3/2=84/56)+1/56=85/56