2-5/11÷9/22-5/9 3/7÷(2/3-1/2) 2/15*5+4/7÷4 28*(5/18÷36/27)
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2-5/11÷9/22-5/93/7÷(2/3-1/2)2/15*5+4/7÷428*(5/18÷36/27)2-5/11÷9/22-5/93/7÷(2/3-1/2)2/15*5+4/7÷428*(5
2-5/11÷9/22-5/9 3/7÷(2/3-1/2) 2/15*5+4/7÷4 28*(5/18÷36/27)
2-5/11÷9/22-5/9 3/7÷(2/3-1/2) 2/15*5+4/7÷4 28*(5/18÷36/27)
2-5/11÷9/22-5/9 3/7÷(2/3-1/2) 2/15*5+4/7÷4 28*(5/18÷36/27)
(1)2-5/11÷9/22-5/9 (2)3/7÷(2/3-1/2) (3)2/15*5+4/7÷4 (4)=28*5/24
=2-10/9-5/9 =3/7÷1/6 =2/3+1/7 =35/6
=1/3 =18/7 =17/21
2-5/11÷9/22-5/9
算一算、题目如下:4/5÷8/9×5/6 11/4×5/7÷11/2 36÷9/11÷18/5 6/7×5/3÷4/5 7/8÷14/4÷5/3
2-5/11÷9/22-5/9 3/7÷(2/3-1/2) 2/15*5+4/7÷4 28*(5/18÷36/27)
3÷5+5÷7+7÷9+9÷11+.+49÷51=多少?
如果:4÷2=14 5÷3=22 3÷5=4 7÷18=31 那么:6÷9=()
5又2/11×3又3/4+52/11÷4/5 1/3×38/45÷(5/2+2/3) 2又7/16×5/9+3又1/3÷8/9 5-13/8×4/33-5/224又2/3×15-7/2÷0.2452/11×33/4+52/11÷4/5 1/3×38/45÷(5/2+2/3) 2又7/16×5/9+3又1/3÷8/9 5-13/8×4/33-5/22 4又2/3×15-7/2÷0.24 4/7×3/8+5/8×
1+2+3+4+5+6+7+8+9+10÷11÷12×0=?
9÷(9÷8)÷(8÷7)÷(7÷6)÷(6÷5)÷(5÷4)÷(4÷3)的简便算法
(9/4+9/7)÷9/28 (25+5/9)÷5 11/9÷9/8-8/9*2/9
3/5÷[7/8-(2/5+3/8)]-(4/5-1/4)* 6/11÷9/20
13/11÷26= 5/8×5= 3/2÷2/3= 8/15×9/10= 5/8×4/15=9/10÷12/5= 21×3/35= 45÷9/5×2/81= 9×5/6÷5/12= 30÷2/3÷4/5= 5/9×11/3×1/2= 3/7÷7/13×14/9= 4/7×28÷1/10=
2/11÷1/9÷19/22 9/5x2/3÷12/11÷1/9÷19/22 9/5x2/3÷18/35(3/4-1/12)÷1/63/5x(20+5/6)
加上括号,使等式成立1+2×3÷4+5+6÷7=11+2÷3×4+5+6-7÷8=11×2+3+4-5+6+7-8÷9=1
数学简算(快来答啊,)2/3*[(3/4-1/6)÷1/5] 1/3÷(2/3-2/5)*3/5 12/15*(5/6+3/4)+4/5 7/9÷11/5+2/9*5/11
5/6x=7/10 3/4x+5/8x=22/9 X÷9/16=4/9÷2/3
它们的商有什么规律?1÷9,2÷9,3÷9,4÷9,5÷9,6÷9,7÷9,8÷9,
(1-3)×(3-5)÷(5-7)×(7-9)÷(9-11)×(11-13)÷…×(2011-2013)÷(2013-2015)
计算(1-3)×(3-5)÷(5-7)×(7-9)÷(9-11)×(11-13)÷.×(2011-2013)÷(2013-2015)