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)
9/x = 0.5 // - 0.5
9/x-0.5 = 0
9*x^-1 = 0.5 // : 9
x^-1 = 0.05555556
-1 < 0
1/(x^1) = 0.05555556 // * x^1
1 = 0.05555556*x^1 // : 0.05555556
17.99999856 = x^1
x = 17.99999856
x = 17.99999856
| -10(s+4)=-75 | | 2x^3n=2x^16 | | 13+2(3)=22-c | | 6n-4n=-12 | | 13+2(2)=22-c | | 5x+-2=48 | | 13+2(-1)=22-c | | 7*x=35 | | 6(4s+6)=156 | | 3(2l+6)=42 | | 13+2c=22-c | | (2x-1)2=(x-1)2 | | 2x^2+x-91=63 | | 2(15x+2)=48 | | (4/5):(8) | | (4/5):8 | | 5x+3=5-2x | | X^-3=1/27 | | x^2(x^2-4x+6)=3 | | X-25=73 | | -5(-x+3)=165 | | X+25=73 | | 6(t-3)+4t=5(2t+3)-11 | | -x(5x)= | | -x(-5x)= | | 2*x+10=18 | | =v-6 | | 1-2/18 | | 9x+17-(9x+35)= | | 9x-17-(9x-35)= | | 5000xa=7000000 | | 0=3xsquared+5x-28 |