[7+(39+1/13)]×6=?[14+(36×1/6)]×5=?(9-2)×1/14÷14=?6+(8-3)÷1/14=?
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[7+(39+1/13)]×6=?[14+(36×1/6)]×5=?(9-2)×1/14÷14=?6+(8-3)÷1/14=?[7+(39+1/13)]×6=?[14+(36×1/6)]×5=?(9-
[7+(39+1/13)]×6=?[14+(36×1/6)]×5=?(9-2)×1/14÷14=?6+(8-3)÷1/14=?
[7+(39+1/13)]×6=?[14+(36×1/6)]×5=?(9-2)×1/14÷14=?6+(8-3)÷1/14=?
[7+(39+1/13)]×6=?[14+(36×1/6)]×5=?(9-2)×1/14÷14=?6+(8-3)÷1/14=?
[7+(39+1/13)]×6
=[46+1/13]×6
=46×6+1/13×6
=276+6/13
=276又6/13
[14+(36×1/6)]×5
=[14+6]×5
=20×5
=100
(9-2)×1/14÷14
=7×1/12×1/14
=1/2×1/14
=1/28
6+(8-3)÷1/14
=6+5÷1/14
=6+70
=76
[7+(39+1/13)]×6=?[14+(36×1/6)]×5=?(9-2)×1/14÷14=?6+(8-3)÷1/14=?
39*7/13-39/13/6
1( ) x( )39=( )( )7,14( )x2( )6=( )1470
20/39*26/35 5/13*4/7*14 【1/7+1/6】*42 7/10*17+7/10*3 的简便运算是什么2点之前回答
1,8,9,4,( C ),1/6A 3 B 2 C 1 D 1/32.133/57,119/51,91/39,49/21,( A ),7/3A 28/12 B 21/14 C 28/9 D 31/15 3.1/(12*13)+1/(13*14)+.+1/(19*20)=?A 1/20 B 1/30 C 1/40 D 1/50
1-3+5-7+9-11+13-.-39+41=?
数列0,1,1,7,14,13,39…‘请问后面的数是多少?
分数计算:7/8-5/6= 2/9+1/2= 2/9*3/5= 5/8*4/15= 7/25*15/14= 4/13*39= 3/10除以14/15= 8/27除以2/9=
8/7*38+43*8/7-8/7 8/9*14/5*10/7 6/39*13/5-6/1 4/9*(3/1-4/1)用递等式计算哦
直接写得数:7/12×24/37=?7/39×13/39=?2/47×10=?1/17×3/5=?61/70×6/32=?9/8×6/7=?
1+2+3+4+5+6+7+8+9+10+11+12+13+14+1000=?
1) 12/13-8/13= 2) 8/9-2/9= 3) 14/15-10=1) 12/13-8/13= 2) 8/9-2/9= 3) 14/15-10= 4) 11/13-7/13=5) 8/10-1/10= 6) 13/14-7/14= 7) 5/9+1/9= 8) 5/13-4/13=9) 4/13-1/13= 10) 4/5-2/5= 11) 9/12+3/12= 12) 7/13-3/13=13) 1/12+11/12= 14) 4/15+8/15= 15) 8/12-2/12= 1
递等式计算:1/7+x5/7+3/8 解方程:6/7+3x=13/14
12+13+14+15-66+7×6÷19=
4-3/22= 3/8÷5/24= 35×2/5=4-3/22= 3/8÷5/24= 35×2/5= 9×3/5= 25×3/5= 2/3+1/8= 7/8×3/14= 5/6-1/2= 39×9/13= 4/5-1/8= 7/10÷7/12= 10/9-1/9= 2/3×1/4= 36÷4/9=
8+6=2;7+13=8;15+19=10;39+88=?
找规律 1 6 4 8 7 10 13 14
1、6、4、8、7、10、()()13、14、