(1+1/3+1/5+1/10+1/15+1/30)/(1/2+1/4+1/6+1/12+1/20+1/60)=​?

(1+1/3+1/5+1/10+1/15+1/30)/(1/2+1/4+1/6+1/12+1/20+1/60)
=(1+1/3+1/5+1/10+1/10)/(1/2+1/4+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6)
=（1/2+1/3+1/5+1/5）/（1+1/4-1/6）
=（1/2+1/3+2/5）/（13/12）
=37/30÷13/12
=74/65

答案是13/8

(1+1/3+1/5+1/10+1/15+1/30)/(1/2+1/4+1/6+1/12+1/20+1/60)
=(30/30+10/30+6/30+3/30+2/30+1/30)/(30/60+15/60+10/60+5/60+3/60+1/60)
=(52/30)/(64/60)
=(26/15)/(16/15)
=26/15×15/16
=13/8本回答被提问者采纳