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)
0.2 = (10.115-x)/x // - (10.115-x)/x
0.2-((10.115-x)/x) = 0
(-1*(10.115-x))/x+0.2 = 0
(-1*(10.115-x))/x+(0.2*x)/x = 0
0.2*x-1*(10.115-x) = 0
1.2*x-10.115 = 0
(1.2*x-10.115)/x = 0
(1.2*x-10.115)/x = 0 // * x
1.2*x-10.115 = 0
1.2*x-10.115 = 0 // + 10.115
1.2*x = 10.115 // : 1.2
x = 10.115/1.2
x = 8.42916667
x = 8.42916667
| 3+4x-2=40 | | 60x-5=30 | | x*8/2 | | 8(4k-4)=-5k-3 | | x^2-12x-22=-2 | | 9=3/5v | | 2x/5=-10 | | 4.3(2.4+3.7r)=66.005 | | -(21/4)=r-4/5 | | -4(p-5)=-9p | | x+2x+3x+4x=90 | | 2(1+2.5x)=29.5 | | 2(3n+3p)-2(2n+4p)= | | 11-x=8-x | | 5x-8-3x=3x-1 | | 6n-7=3(2n+5) | | 44(2r+8)=88 | | 0.75r=-3 | | -57.2=-2.5(3.2+4.1x) | | (13k+15)(k+13)=167 | | 9x^2-4x-3= | | -3y/4-8=1 | | 5x-14=39 | | -6(3n+1)=-150 | | 3x^2+y^4=2 | | 174=5(7+4x)-1 | | 4(x-3)=4.7w-7.6 | | 0.2*-8=-2 | | 13x^2+53x=0 | | 7(54)-6+6=-2(-162)-(-120)-1 | | 6x-3/36x^2-9 | | b+18b+3b=74 |