(-1/30)/(2/3-1/10+1/6-2/5) 1-8(1/4+0.5x)=3(1-2x){ 3/2x+3x>9 4x-34≤96-9x 2x-5>4x 1/2x+3≤2-1/4x 2(x-3)-3(x+1)>0
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(-1/30)/(2/3-1/10+1/6-2/5)1-8(1/4+0.5x)=3(1-2x){3/2x+3x>94x-34≤96-9x2x-5>4x1/2x+3≤2-1/4x2(x-3)-3(x+1
(-1/30)/(2/3-1/10+1/6-2/5) 1-8(1/4+0.5x)=3(1-2x){ 3/2x+3x>9 4x-34≤96-9x 2x-5>4x 1/2x+3≤2-1/4x 2(x-3)-3(x+1)>0
(-1/30)/(2/3-1/10+1/6-2/5) 1-8(1/4+0.5x)=3(1-2x)
{ 3/2x+3x>9 4x-34≤96-9x 2x-5>4x
1/2x+3≤2-1/4x 2(x-3)-3(x+1)>0
(-1/30)/(2/3-1/10+1/6-2/5) 1-8(1/4+0.5x)=3(1-2x){ 3/2x+3x>9 4x-34≤96-9x 2x-5>4x 1/2x+3≤2-1/4x 2(x-3)-3(x+1)>0
(-1/30)/(2/3-1/10+1/6-2/5)
=(-1/30)/(5/6-1/2)=(-1/30)/(1/3)=-1/10
1-8(1/4+0.5x)=3(1-2x)
1-2-4x=3-6x
2x=4
x=2
3/2x+3x>9
9/2x>9
x>2
4x-34≤96-9x
13x≤130
x≤10
2x-5>4x
2x0
x
(1,5,10),(2,10,20),(3,15,30)( )
(1/2-1/3)+(1/4-1/5)+(1/7-1/10)+(1/14-1/15)+(1/28-1/30)要求简便运算.
1/2 1/10 1/30 1/68()
(-1/30)除以(-1/10-2/5+1/6-2/3)
计算:(-1/30)/(2/3-1/10+1/6-2/5)
(1/3-1/5-1/10)×30简便计算
(3/1-5/1-10/1)*30=?
10*20*30+2+3+1
1+2+3+10+20+30
10³+(1/30)^-2×(π-5)^0-(-3)³×0.3^-1+|-23|;
计算 M/(5/M+3/M) (3/A-1/2A)*4A 找规律计算 1/2、2/3、3/4、4/5.30/29、29/30两道计算题1、(1+1/2)*(1+1/3)*(1+1/4)*(1+1/5)*.*(1+1/9)*(1+1/10)2、(1-1/10)*(1-1/9)*(1-1/8)*(1-1/7)*.*(1-1/3)*(1
(1/2-1/3)+(1/4-1/5)+(1/7-1/10)+(1/14-1/15)+(1/28-1/30)(1/2-1/3)+(1/4-1/5)+(1/7-1/10)+(1/14-1/15)+(1/28-1/30)
(1-1/2^2)(1-1/3^2)K(1-1/10^2)
(1-1/2^2)(1-1/3^2)K(1-1/10^2)
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90=______1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90 =1/(1*2)+1/(2*3)+1/(3*4)+1/(4*5)+1/(5*6)+1/(6*7)+1/(7*8)+1/(8*9)+1/(9*10) =1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1
(3分之2-10分之1+6分之1-5分之2)除(-30分之1)=?
(-30分之1)÷(-10分之1-5分之2+6分之1-3分之2)过程..
(—1/30)÷(2/3-1/10+1/6-2/5)的两种方法计算