3x-7>5x-2,2x+11>3x+5.
3x-7>5x-2,2x+11>3x+5.
(x-2)(x-3)/(x+5)(x-7)>0
4x-2=3x+1 -x+3=10 x-7=11-x x=四分之一x+6
解下列不等式:x²+28≥11x ;x²+x>1/4 ;-3x²+6x>2
X-2分之X=X-5分之X-4怎么解?还有X减3分之X等于X减1分之X+1
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
(2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1
x+2/x+3-x+1/x+2=x+8/x+9-x+7/x+8
3-2x<x-4,x/2-1<x/3+1/2,4-1/2x>3/2+x/3,6x-7<3-4x,求各题答案,
6x-2x+3x-3x-x=1.2×3
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
像5-x>3,2x+5,16-7=9,3x+4=12,50x=200-100,0+x=2.9,2.5x=+0,4x<18