2009(22x-35)=9―2008(35―22x)
35(x-2)-15(5x-6)=22x-63-21(3x-4)
方程35(2-x)+15(6-5x)=22x+7+21(4-3x)
5x+3=x-4,4y+11=22,11x+68-2x=100-9x,0.1x/0.2-(0.27x+0.18)/0.0
方程 0.6(x+4)+0.8=1.2x+0.58 11x+42-2x=100-9x-22
x-1/4x=1/2 16x(3-2/9) x-0.8x=22
2x+(22-x)=40
解方程⑴ x/(2x^2-11x-21)=(x+7)/(x^2-12x+35)
方程x/3+x/15+x/35+…+x/2005*2007+x/2007*2009=1的解是x=()
(4x+2)/x+(4x-22)/(x-5)=(x-6)/(x-4)+(7x+9)/(x+1)
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)