1/6*9+1/9*12+1/12*15+1/15*18+1/18*21+1/21*24等于几?(最好有解析)
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/22 04:46:32
1/6*9+1/9*12+1/12*15+1/15*18+1/18*21+1/21*24等于几?(最好有解析)1/6*9+1/9*12+1/12*15+1/15*18+1/18*21+1/21*24等
1/6*9+1/9*12+1/12*15+1/15*18+1/18*21+1/21*24等于几?(最好有解析)
1/6*9+1/9*12+1/12*15+1/15*18+1/18*21+1/21*24等于几?(最好有解析)
1/6*9+1/9*12+1/12*15+1/15*18+1/18*21+1/21*24等于几?(最好有解析)
1/6*9+1/9*12+1/12*15+1/15*18+1/18*21+1/21*24
=1/3(1/6-1/9)+1/3(1/9-1/12)+1/3(1/12-1/15)+1/3(1/15-1/18)
+1/3(1/18-1/21)+1/3(1/21-1/24)
=1/3(1/6-1/9+1/9-……+1/21-1/24)
=1/3(1/6-1/24)
=1/24
1/3+1/6+1/9+1/12+1/15
1/3+1/(3+6)+1/(3+6+9)+1/(3+6+9+12)+1/(3+6+9+12+15)+.1/(3+6+9+12+15+.96+99)
计算:1/12-5/12-6/12-1又9/20+1又11/15
找规律15,1,12,1,9,(),(),(),()
5/6-(1/12+2/15)简便方法8/9-(1/5-1/9)
3*(1/9+1/15)+x*(1/12+1/15)=5/6
(1/9+1/15)*3+(1/12+1/15)X=5/6
简算 2/3+1/6+1/9+1/12+1/15+1/18
3/2+6/1+9/1+12/1+15/1+18/1 怎么简算
2/3+1/6+1/9+1/12+1/15+1/18
2/3+1/6+1/9+1/12+1/15+1/18=
(1/6+1/9—1/12)*4*9简算
9x(2/15-1/12)-0.2
3*6分之1+6*9分之一+9*12分之一+12*15分之一+15*18分之一简便运算
1/6*9+1/9*12+1/12*15+1/15*18+1/18*21+1/21*24等于几?(最好有解析)
12-9-7-1
12 9 12 9 14 7 10 9 1 15 12 15 22 5 26 8 21 20 1
1/(1*3) + 1/(3*6) + 1/(6*9) + 1/(9*12) + …+1/(96*99)