(x-160):(1000-x)=5:2解方程
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(x-160):(1000-x)=5:2解方程(x-160):(1000-x)=5:2解方程(x-160):(1000-x)=5:2解方程(x-160)*2=(1000-x)*52x-320=5000
(x-160):(1000-x)=5:2解方程
(x-160):(1000-x)=5:2解方程
(x-160):(1000-x)=5:2解方程
(x-160)*2=(1000-x)*5
2x-320=5000-5x
7x=5320
x=760
5(1000-x)=2(x-160)
x=760
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
解方程1000*X^5-59(X^4+X^3+X^2+X)=1000
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
x(x-2)-2x(x+1)-3x(x-5) 其中x=负½
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
f(x,-x)=x^2+2x,fx(x,-x)=5x+1,则fy(x,-x)=
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
x^5-2x^3+x=?
2x+5*(50-x)=160
写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4
(x-160):(1000-x)=5:2解方程
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x^3+x^2+3x=1000 x=?
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