[(8+9+10)/7-(9+10+11)/8+(10+11+12)/9-(11+12+13)/10]/[1/7-1/8+1/9-1/10]

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/06 11:58:05
[(8+9+10)/7-(9+10+11)/8+(10+11+12)/9-(11+12+13)/10]/[1/7-1/8+1/9-1/10]

[(8+9+10)/7-(9+10+11)/8+(10+11+12)/9-(11+12+13)/10]/[1/7-1/8+1/9-1/10]
[(8+9+10)/7-(9+10+11)/8+(10+11+12)/9-(11+12+13)/10]/[1/7-1/8+1/9-1/10]

[(8+9+10)/7-(9+10+11)/8+(10+11+12)/9-(11+12+13)/10]/[1/7-1/8+1/9-1/10]
(8+9+10)/7=3+6/7
(9+10+11)/8=3+6/8
.依次类推
[(8+9+10)/7-(9+10+11)/8+(10+11+12)/9-(11+12+13)/10]=6(1/7-1/8+1/9-1/10)
然后就简单了 =6