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)
3/x-1 = 18/x+4 // - 18/x+4
3/x-(18/x)-4-1 = 0
3/x-18*x^-1-4-1 = 0
-15*x^-1 = 5 // : -15
x^-1 = -1/3
-1 < 0
1/(x^1) = -1/3 // * x^1
1 = -1/3*x^1 // : -1/3
-3 = x^1
x = -3
x = -3
| 4x+2/x-2=9 | | A=640s | | ln(x+25)=ln(x)+ln(25) | | 7=+8-12 | | 2c-5=3d+11 | | 20+3x+5+2x+5=180 | | 12x-9y=6 | | -2y=-x+8 | | (40+x)/(80+x)=0.60 | | 12-7x=17-4x | | 12-7x=0-4x | | 20-4(3)= | | 16/340= | | 4x+17=99x-17 | | 4x+17=8-9x | | 5x+10=8-9x | | 5x+10=8-4x | | 12.10/3 | | y=88-3x | | 3x+12=3x-3 | | n-6/-4=6 | | 7-5/8z=-23 | | 4x+64=9x | | x/-7+10=7 | | 5.8x-1=4.8 | | 4a^2+26a+12=0 | | x-5/6=4/3 | | x-8.4=-3.9 | | 2(2-4x)=25 | | 5+n/4.2=-4 | | -12/7+a=48 | | 7x+11=127+x |