解方程：(x+3)/(x+2)-(x+4)/(x+3)=(x+5)/(x+4)-(x+2)/(x+1)
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解方程：(x+3)/(x+2)-(x+4)/(x+3)=(x+5)/(x+4)-(x+2)/(x+1)解方程：(x+3)/(x+2)-(x+4)/(x+3)=(x+5)/(x+4)-(x+2)/(x+
解方程：(x+3)/(x+2)-(x+4)/(x+3)=(x+5)/(x+4)-(x+2)/(x+1)
解方程：(x+3)/(x+2)-(x+4)/(x+3)=(x+5)/(x+4)-(x+2)/(x+1)
解方程：(x+3)/(x+2)-(x+4)/(x+3)=(x+5)/(x+4)-(x+2)/(x+1)
(x+3)/(x+2)-(x+4)/(x+3)=(x+5)/(x+4)-(x+2)/(x+1)
((x+3)^2-(x+4)(x+2))/((x+3)*(x+2))=((x+5)(x+1)-(x+4)(x+2))/((x+1)(x+4))
1/(x^2+5x+6)=-3/(x^2+5x+4)
-3x^2-15x-18=x^2+5x+4
4x^2+20x+22=0
Δ=400-4*4*22=48
x=(-20±4√3)/4
x=-5±√3
X平方+5X+6-X平方-7X-12=X平方+9X+20-X平方-3X-2
-2X-6=6X+18
8X=-24
X=-3
看起来容易，实际挺难
√3-5/2
(x+2+1)/(x+2)-(x+3+1)/(x+3)=(x+4+1)/(x+4)-(x+1+1)/(x+1)
所以列项的 1/(x+2)-1/(x+3)=1/(x+4)-1/(x+1)
1/(x+1)-1/(x+3)=1/(x+4)-1/(x+2)
通分得 2/(x+1)*(x+3)=-2/(x+4)*(x+2)
(x+1)*(x+3)=-(x+4)*(x+2)
X^2+4X+3=-(X^2+6X+8)
2X^2+10X+11=0
X=-5±√3
解方程 x(2x-4)+3x(x-1)=5x(x-3)+8
解方程x（x-1)(x-2)(x-3)(x-4)=24x=?
解方程：x(3x-4)+2x(x+7)=5x(x-7)+90
解方程:x-2x+3x-4x+...+99x-100x=25
解方程：x-2x+3x-4x+.+99x-100x=25
解方程(x+1/x-1)+(x-2/x+2)+(x-3/x+3)+(x+4/x-4)=4
解方程：(x+3)/(x+2)-(x+4)/(x+3)=(x+5)/(x+4)-(x+2)/(x+1)
解方程：（x-8）/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
解方程：2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
解方程 (x+2)/(x+1) - (x+4)/(x+3)=(x+6)/(x+5)-(x+8)/(x+7)
解方程(x-3)^2=4x(x-3)
(x-3)^2=4x(x-3) 解方程
3x^2-4x=2x 解方程
2x+3x=18+4x解方程
解方程：x(2x+3)=4x+6
解方程3(x+1)(x-2)=4x