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-(40.46/x) = 0.5 // - 0.5
1-(40.46/x)-0.5 = 0
1-40.46*x^-1-0.5 = 0
-40.46*x^-1 = -0.5 // : -40.46
x^-1 = 0.01235788
-1 < 0
1/(x^1) = 0.01235788 // * x^1
1 = 0.01235788*x^1 // : 0.01235788
80.92002835 = x^1
x = 80.92002835
x = 80.92002835
| (3x)/(2x-1)=6 | | 5(x+4)=3(x+8)+2 | | 1-(21.24/x)=0.49 | | (5n/3)-1=(3n/2)+4 | | 10x+13=7x-8 | | 8r-r+3+2r=21 | | 1-(5.50/x)=0.75 | | 1-(9.99/x)=0.70 | | -5q+11=3q-17 | | 5n/3-1=3n/2+4 | | p-100=100 | | (5x+1)/5x | | -12=-4+8n+2-3n | | 1-(3.82/x)=0.90 | | 72m=8 | | 1-(53.01/x)=0.65 | | 7(3k-2)=7 | | 3j-7-5j=7 | | 1-(132.81/x)=0.56 | | 9i-8+i=12 | | 4/3h=6 | | 1-(37.61/x)=0.42 | | g+g=4g-6 | | 1-(31.80/x)=0.48 | | 5x+71=3x+87 | | 1-(39.67/x)=0.55 | | (4x-1)(4x+1)=0 | | 90*x-4.9*x^2=-150 | | 2x+97=5x+40 | | 6-9x=129-30x | | 6r+6-4r=2(r+3) | | 1-(12.41/x)=0.25 |