①(4x+15):(3x-8)=5:2
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
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
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
15x(3x-8)-4X(2X+3)=6X(4X-4)-4
5*(x-2)=4*(x+3) 2x+(50-x)*4=140 3x-(8-x)=20*4 200x=(x-0.5)*2
六道解方程4×(0.8-x)=1.45+2/3x-1/2x=1210x+9=8x+19115%x+15%x=1.32x-
x+1分之x+2减去x+3分之x+4=x+5分之x+6减去X+7分之x+8 (解方程)
(先化简后求值)(3x/x+2-x/x-2)+2x/x^2-4,x=4-根号5,
4x-3(x-5)=2x+(x-1) (3x+29)除以8=4x 7(x+10)=5(4x-10) 5分之2(x-15)
因式分解法解二元一次方程.①x(x-3)-2(3-x)=0 ②5x(x+2)=4x+8