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)
45/X = 9 // - 9
45/X-9 = 0
45*X^-1 = 9 // : 45
X^-1 = 1/5
-1 < 0
1/(X^1) = 1/5 // * X^1
1 = 1/5*X^1 // : 1/5
5 = X^1
X = 5
X = 5
| 8x=0.582 | | 9-(3z-9)=5-4x | | x^2+5x+106=0 | | (6+4x)/2-5=x+2 | | 7x+4+9x+3=180 | | 1/2(110-5x)=30 | | 36=2x^2-12x+36 | | 110-5x=15 | | 24x+4=6x+6 | | 2x+6-1=2+12 | | tan(4x)=-1 | | 12(n+60)=144 | | 4z+2=-5-3 | | ((8x^3)/(2x))^2 | | 3(2+4x)-2x=20+5x | | 12-3(x+1)+6x=-(x-15) | | 4.9=30 | | 4p-13p-p=-13 | | 5(.5+1.38g)+10(.20)=5.70 | | 2x-37=9 | | 3j=55.95 | | f(x)=2x^2+16x+27 | | 81/N=27 | | X^4-22x^2-8x+27=0 | | 7x-2/15=-5/6 | | 3n^2-24n=1 | | 5(.5+1.38(.20))+10g=5.70 | | 4=-5x+6x^2 | | 3-8x-11x+4= | | 5-4x=5+5 | | x=91-y^2 | | 12x^3-54x^2+1=0 |