6/5x=3.5+7/12
(x-2)(x-3)+2(x-5)(x+6)-3(x^2-7x+12)
已知3x-x=1,求6x+7x-5x+2000的值.
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
((x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x
解方程x²+x-6分之5x+x²-x-12分之2x-5=x²-6x+8分之7x-10
解分式方程(5-2x)/(x^2-x-12)=5x/(x^2+x-6)+(10-7x)/(x^2-6x+8)得
解方程.(5x/x²+x-6)+(2x-5/x²-x-12)=7x-10/x²-6x+8
x=x/6+x/12+x/7+5+x/2+4=?
1/6x+1/12x+1/7x+5+1/2x+4=x
6x+3=7x(x+5)
3x+8-5【x+1】=2【x+6】-7x 等于多少?
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|