(1)6.7-0.8x=3(1.7-0.2x) (2)28+1.9x=4(6+0.6x) (3)x-4=2*[1.5(x
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
(1)6.7-0.8x=3(1.7-0.2x) (2)28+1.9x=4(6+0.6x) (3)x-4=2*[1.5(x
x(x^2-1)+2x^2 *(x+1)-3x*(2x-5)=x(3x^2-4x)-28
6/(x+1)=(x+5)/[x(x+1)] (3-x)/(x-4)+1/(4-x)=1 2/(1+x)-3/(1-x)
1、x*(x+3)*(x+6)*(x+9)=68040 2、x*(x+1)*(x+2)*(x+3)*(x+4)=5544
5x-3(2x+1)=6x-4(5-3x)求x
(1)6+2(x-3)=X (2)8-2(x-7)=x-(x-4) (3)2x-(1.5x-1)=2(1.5x-1)
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
3/x-1=4/x 6/x+1=x+5/x(x+1)
X-(X/2)+(X/3)-(X/4)+(X/5)-(X/6)=1
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
先化简再求值:(x+2/x²-2x - x-1/x²-4x+4)÷ x-4/x,其中x=3/2