X×(1-2/5)+(72-X)×(1-5/9)=39
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
(x-1)/x -(1-x)/(x+1)=(5x-5)/(2x+2) x等于多少
(x+2分之x+3)-(x+1分之x+2)=(x+4分之x+5)-(x+3分之x+4) 计算x+3分之2x+9-x-3分
6/(x+1)=(x+5)/[x(x+1)] (3-x)/(x-4)+1/(4-x)=1 2/(1+x)-3/(1-x)
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
x(x^2-1)+2x^2 *(x+1)-3x*(2x-5)=x(3x^2-4x)-28
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
(2x-2)(x-1)=0 x(x-5)=5x-10
5x-3(2x+1)=6x-4(5-3x)求x
化简 x(x-1)+2x(x+1)-3x(2x-5)