Question

1/2+1/6+1/12+1/20等于几分之几

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！

Answer 1

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