(-1/63)/(1/9-2/7+2/3-4/21)怎么做?
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(-1/63)/(1/9-2/7+2/3-4/21)怎么做?
(-1/63)/(1/9-2/7+2/3-4/21)怎么做?
(-1/63)/(1/9-2/7+2/3-4/21)怎么做?
(-1/63)/(1/9-2/7+2/3-4/21)
=(-1/63)/(1/9+6/9-6/21-4/21)
=(-1/63)/(7/9-10/21)
=(-1/63)/(49/63-30/63)
=(-1/63)/(19/63)
=-1/19
(-1/63)/(1/9-2/7+2/3-4/21)
=-1÷(1/9×63-2/7×63+2/3×63-4/21×63)
=-1÷(7-18+42-12)
=-1÷19
=-1/19
(1/7-1/9+1/21) /1/63+(-2)^3
-1/63/(3/14-2/9+1/7-1/3)+(-2/5)*1/5等于多少?
用简便方法计算:-1/63除以(1/9-2/7+2/3-1/14)
(-1/63)/(1/9-2/7+2/3-1/14)怎么简便计算?
( 1/63 )除以(1/9 - 2/7 +2/3 - 1/14)
负63分之1,除(9/1 - 7/2 + 3/2- 14/1)等于?
-1/63÷(1/9-2/7+2/3-1/14)=?过程
-63/1÷(9/1-7/2+3/2-14/1)
(-1/63)÷(1/9-2/7+2/3-1/14) 要简便方法急求!
-1/63/(3/14-2/9+1/7-1/3) 简算方法及答案 快
负1/63除以(3/14减1/3减1/7加2/9)
(1/9+1又4/7+3又2/3)÷1/63简便方法
2,1,3,7,15,( ),63,( )
求(-1/63)/(1/9-2/7+2/3-4/21)的答案
(-1/63)/(1/9-2/7+2/3-4/21)怎么做?
数学计算(-1/63)/(1/9-2/7+2/3)要有过程啊,
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计算(-1/63)除以(1/9_2/7+2/3_1/14)