7/9-1/2x=1/2x-2/3怎么解

2/(X-2)+X/(X+3)=1 怎么解 7x-3(2/3x+1/5x)-(x+2/5x)+2x,=5x怎么求出 1/2x+1\4x+1/7x=x-3怎么解这个方程? 【(x-1)/x】-【(7x-7)/2x】+3=0 怎么解 3x-2x(x-1)=4*1.5-7x 怎么解方程式 |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1 解方程：x/(x-2)+(x-9)/(x-7)=(x+1)/(x-1)+(x-8)/(x-6) 解方程(3x^2+9x+7)/(x+1)-(2x^2+4x-3)/(x-1)-(x^3+x+1)/(x^2-1)=0 设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10), 解方程(x+1/x+2)-(x+2/x+3)=(x+5/x+6)-(x+6/x+7) 解方程：x+2/x+1-x+3/x+2=x+6/x+5-x+7/x+6