(10-6)×200+(10-x)×(200+50x)+(-2)×(200-50x)=1250
5*(x-2)=4*(x+3) 2x+(50-x)*4=140 3x-(8-x)=20*4 200x=(x-0.5)*2
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
解方程.(5x/x²+x-6)+(2x-5/x²-x-12)=7x-10/x²-6x+8
求解几道方程.1/2x-20+1/2【x-(1/2x-20)】+20=x-50 x/(200-400/3)+x/(200
(x+1分之x+6)-(x^+3x+2分之3x^+10x+4)+(x+2分之2x+1)=0,解这个方程
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
(2x-2)(x-1)=0 x(x-5)=5x-10
(X-X*20%-18-(X-X*20%-18)*10%=X*1/2-3(过程)
30-3(3-X)=4X 3X+12*6=15X+12 4X-2(50-X)=20 12(X-13)=10(X+3) 1
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
2x(56-X)-10=30+X