1、7.2+2.3X=4.7X+2.4 2、19.3-3.3X=13-1.2X
x+2/x+3-x+1/x+2=x+8/x+9-x+7/x+8
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x/x平方-x+2=2x/x+1
解方程((13x-x^2)/(x+1))(x+(13-x)/(x+1))=42
(13x-x^2)/(x+1)[x+(13-x)/(x+1)]=42
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
13x-5x(2x-3.3)=24 16-5x(x+1.2)=2x-4 方程解
解方程 1/2x-28=50 x-2/7x=15/28 3x-1.2=3.6 x-20%x=7.2 0.9x+1.3x=
X-2分之X=X-5分之X-4怎么解?还有X减3分之X等于X减1分之X+1
(X+X)+(X-X)+(X*X)+(X/X)=100
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)