1/2-1/3+1/4-1/5+1/6-1/12

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/11/08 18:39:03

(1/2-1/3+1/4-1/5+1/6-1/12)X60
=30-20+15-12+10-5
=18
18除以60=3/10

2/1 3/1 4/1 5/1 6/1 8/1 10/1 12/1 15/1 20/1 递等式计算 1/2-1/3+1/4-1/5+1/6-1/12 简便计算下题.1/2-1/3+1/4-1/5+1/6-1/12 (1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10+1/11+1/12+1/13+1/14+1/ 找规律填空：1/12,1/6,1/4,1/3,5/12,1/2,（）. -1/2,+1/3,-1/4,+1/5,-1/6,. (1+1/3+1/5+1/10+1/15+1/30)/(1/2+1/4+1/6+1/12+1/20+1/60)(用简算) (1/2+1/4+1/6+1/10+1/12+1/60)/(1+1/3+1/5+1/10+1/15+1/30) (1+1/3+1/5+1/10+1/15+1/30)/(1/2+1/4+1/6+1/12+1/20+1/60)=R 简算:（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+1+1+11+-1-1-1-1-2-3-4-5-6等于