几道解方程1.7x-3=2(x+6)2.8(x-3)-4x+9=03.7(2x-3)+15=2x-54.2-(x-811

解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8) 已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) 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：(x-2)(x^2-6x-9)=x(x-5)(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+8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) 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（x的平方-6x-9）=x(x-5)X(x-3) 解方程：2x+4x+6x...+100x=1-(x+3x+5x+...+99x) 解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3 方程（x+1)(x+2)(x+3)(x+4)(x+5)(x+6)(x+7)(x^2+8x+9)+64=0