(X-3/1)×30%=62.5%
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(X-3/1)×30%=62.5%(X-3/1)×30%=62.5%(X-3/1)×30%=62.5%(X-3/1)×30%=62.5%300x-100=625300x=725x=725/300x=2
(X-3/1)×30%=62.5%
(X-3/1)×30%=62.5%
(X-3/1)×30%=62.5%
(X-3/1)×30%=62.5%
300x-100=625
300x=725
x=725/300
x=29/12
(X-3/1)×30%=62.5%
0.3x-0.9=0.625
0.3x=1.525
x=61/12
(X-3/1)×30%=62.5%
300x-100=625
300x=725
x=725/300
x=29/12
计算:(x+1)x=7 (x-1)(x+2)=30 (3-x)(3-x)+x=9
x-2/5x-(x-2/5x)2/3-(2/5x-1/3x)=30求x
(x^2-3x+1) (x^2+3x+2)( x^2-9x+20)= -30求X
(X+1)X(X+2)X(X+3)=504
一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X
(x-2)/30+(x-3)/45+x/90=1
3x+30×(1-x)=3.27
解方程(x^2-3x+1)(x^2-3x+2)(x^2-9x+20)=-30
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x(x-2)-2x(x+1)-3x(x-5) 其中x=负½
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
3X+30+X+X-15=?
x+35=(x+3x)*30%
60%x+25=40 x+30%x=52 19-120%x=7 4分之3x-5%x=17.5 x-10%x=18 (1-25%)x=36 2x+30%x=9.2
X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4)