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)
2 = 1.3/x // - 1.3/x
2-(1.3/x) = 0
2-1.3*x^-1 = 0
-1.3*x^-1 = -2 // : -1.3
x^-1 = 1.53846154
-1 < 0
1/(x^1) = 1.53846154 // * x^1
1 = 1.53846154*x^1 // : 1.53846154
0.65 = x^1
x = 0.65
x = 0.65
| 7r+8+10r-19r+15= | | x^2+14x+18=0 | | -2(x+8)+6=-10 | | w+5=-11 | | 2-12=20 | | 1/4(x)-3/2=2 | | -7-5(-6n-1)=-92 | | -3k^2-4k+6=0 | | 7x-34=7(x+7) | | 9x-15+6x+30=180 | | 2r+48=10r | | -3k^2+8k+5=0 | | 14-5x=-8x+5 | | 82=38 | | 3b-13+4b=w-7 | | 30y=40+10x | | 7k^2+8k+1=0 | | 9r^2-49t^2=0 | | 2x^(-3/5) | | 6z+2z=7z+1 | | -4v+4v=-6 | | 5x^6-30=0 | | 56=-8t | | 2x(x-0.5)*(x+1)=3x*(x-0.5) | | 5.7x+2.14x=36.14 | | 12a^2b-68a^/ | | 5.2=8.2/x | | 5-3w-7=w-7 | | 5x-40=5x/3 | | b=a+(-1)d | | 7-7r=-7(6r-6) | | -3(4-8k)-8k=-108 |