If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(1-x)/x+2 = 7/x // - 7/x
(1-x)/x-(7/x)+2 = 0
(1-x)/x-7*x^-1+2 = 0
(1-x)/x-7/x+2 = 0
(1-x)/x-7/x+(2*x)/x = 0
2*x-x-7+1 = 0
2*x-x-6 = 0
x-6 = 0
(x-6)/x = 0
(x-6)/x = 0 // * x
x-6 = 0
x-6 = 0 // + 6
x = 6
x = 6
| (x^2)-8x+16=0 | | 9.34-b=100.47 | | 7y-12y= | | 15x+5/10 | | 0=-2x^2-9x+18 | | 17x+3x= | | -5=-6-3s+s+1 | | 2(2-7r)-9=-145 | | u^3=14ui^2+32u | | 1/3(x)-14=45 | | 4y=(2y^2)-6 | | 0=-x^2+5x-6 | | -3+6=-4 | | 8-5d=3a | | -22-3d=-2+d-3d | | 0=3x^2-13x-10 | | -10x-4(x-7)=112 | | 1+2/x=24/x^2 | | x=4/5*45 | | a^2-7a+6= | | 2-7k=-I+20 | | 16+43-39x=89 | | (mx^3+3)(2x^2+5x+2)-(8x^5+20x^4)=m | | 1/4+1/2+5/4 | | p=2(98)+2(112) | | 2/3(9-6)+40 | | t/t-4=t+4/15 | | 1/2+c=4/7 | | -5a+7a=-18 | | -42+2=-52-3 | | x/3-x+27=6 | | 75x-29-53x=58 |