78*((1/24)-(1/54))+24 *(1/54+1/78)-54*(1/24-1/78)
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78*((1/24)-(1/54))+24 *(1/54+1/78)-54*(1/24-1/78)
![78*((1/24)-(1/54))+24 *(1/54+1/78)-54*(1/24-1/78)](/uploads/image/z/15397717-13-7.jpg?t=78%2A%28%281%2F24%29-%281%2F54%29%29%2B24+%2A%EF%BC%881%2F54%2B1%2F78%EF%BC%89-54%2A%EF%BC%881%2F24-1%2F78%EF%BC%89)
78*(1/24-1/54)+24 *(1/54+1/78)-54*(1/24-1/78)
=78*1/24-78*1/54+24 *1/54+24*1/78-54*1/24+54*1/78
=(78-54)*1/24-(78-24)*1/54+(24+54)*78
=24*1/24-54*1/54+78*1/78
=1-1+1
=1
=78*1/24-78*1/54+24 *1/54+24*1/78-54*1/24+54*1/78
=(78-54)*1/24-(78-24)*1/54+(24+54)*78
=24*1/24-54*1/54+78*1/78
=1-1+1
=1
请教三道公务员数列题-2,-1, 3 , 21( )1,2,4,6,10,18( )54,12,24,78( )
1、找规律填数字 (1)24、12、36、18、54、27、( )、( ).
有理数运算.1.15-[1-(-20-4)]2.-40-28-(-19)+(-24)3.22.54+(-4.4)+(-1
简算2/3*【(1/18-1/54)/1/54】
(1+78+93)×(78+93+56)-(1+78+93+56)×(78+93)简便运算怎么做
(根号24-根号2分之一)-(根号8分之1+根号54)
简便计算两道:(6分之1-12分之1)×24-5分之4 7.8×2.5+78×0.75
21/32,1,25/24,17/18,43/54,
化简 (√24+√0.5)-(√1/8-√54)
(17分之1+340分之5)×34= 55×54分之5= 78×79分之3=(简便方法算)
(1+19/78×1)+(1+19/78×2)+(1+19/78×3)+……+(1+19/78×12)=?
(1)-175+265-78-22+75