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)
5/x = 12/120 // - 12/120
5/x-(12/120) = 0
5/x-1/10 = 0
5*x^-1 = 1/10 // : 5
x^-1 = 1/50
-1 < 0
1/(x^1) = 1/50 // * x^1
1 = 1/50*x^1 // : 1/50
50 = x^1
x = 50
x = 50
| (x+9)2-7=0 | | x*x+5x=-3 | | 35v^2+9=-36v | | 7f=x | | 126/-7 | | 136/-7 | | 47.1=3.14 | | 10x+25=5+12 | | -99+95= | | 36x^2=x+8 | | -71+0= | | -3x-3+6x=-4x+9 | | t/8-6=12 | | F(10)=7(x-8) | | 5-3x=4x+2 | | x^2-24x-2000=0 | | 0.021/0.0483= | | 3n-12=78 | | .53= | | -x^2-14x+13=0 | | 3n+12=78 | | (N-1)(2n-2)=0 | | 2+-0.5x=3x+16 | | 2-0.5x=3x | | -7x+4(x-3)=-18 | | 5x-18=6x+6 | | 9b=12b-b | | -7x-8=-8x+4 | | (x+5)(x^2+6x-4)=0 | | 331.6601/-0.001 | | 5(x+5)=85 | | 2x-1=3-x |