4x+22=70,x=?

x-4x=102 x-0.8x=22 (4x+2)/x+(4x-22)/(x-5)=(x-6)/(x-4)+(7x+9)/(x+1) x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x （X+X)+(X-X)+(X*X)+(X/X)=100 (x-22)+(x-24)+(x-27)+(x-20)=x 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 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 5x/(x+3)(x+2)+2x-5/(x-4)(x+3)=7x-70/(x+2)(x+4) 5x/(x+3)(x+2)+（2x-5）/(x-4)(x+3)=（7x-70）/(x+2)(x+4) 2x+3x+4x+5x+x+6x+7x=100 先化简,再求值：（x-2/x-x+2/x)/x-2/4x,x=2011 X 7 X - X 7 X = X 9 8 X 9 X - X 9 X = 4 9