152-x=(22+x)×2
152-x=(22+x)×2
(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-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/x平方-x+2=2x/x+1
(29-2x)(22-2x)=478.5 求x
11x+42-2x=100-9x-22
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x-4/1x=8/3 x-0.8x=22 3/2x+2/1x=42
2×(22-x)-4x=2,
2x+(22-x)=40