教我一道简单的算数题1/2+1/6+1/12+1/20+1/30 (/是几分之几)所以没分,多多包涵!

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教我一道简单的算数题1/2+1/6+1/12+1/20+1/30(/是几分之几)所以没分,多多包涵!教我一道简单的算数题1/2+1/6+1/12+1/20+1/30(/是几分之几)所以没分,多多包涵!

教我一道简单的算数题1/2+1/6+1/12+1/20+1/30 (/是几分之几)所以没分,多多包涵!
教我一道简单的算数题
1/2+1/6+1/12+1/20+1/30 (/是几分之几)
所以没分,多多包涵!

教我一道简单的算数题1/2+1/6+1/12+1/20+1/30 (/是几分之几)所以没分,多多包涵!
1/2+1/6+1/12+1/20+1/30
=1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6
=1-1/6
=5/6

=30/60+10/60+5/60+3/60+2/60
=(30+10+5+3+2)/60
=50/60
=5/6

结果 :5/6