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)
0.345 = (18.85-x)/x // - (18.85-x)/x
0.345-((18.85-x)/x) = 0
(-1*(18.85-x))/x+0.345 = 0
(-1*(18.85-x))/x+(0.345*x)/x = 0
0.345*x-1*(18.85-x) = 0
1.345*x-18.85 = 0
(1.345*x-18.85)/x = 0
(1.345*x-18.85)/x = 0 // * x
1.345*x-18.85 = 0
1.345*x-18.85 = 0 // + 18.85
1.345*x = 18.85 // : 1.345
x = 18.85/1.345
x = 14.01486989
x = 14.01486989
| 16(6x+1)=124+12(4x+3) | | 20=-5/2x | | 0.345=(18.85-x)/2 | | x-3+2x=x+7+6x | | 9(6+x)=1 | | 6x+6x=13x-12 | | 2x-14=6(6x-2)-2 | | 9=4(X+2)-(X+8) | | 2.25n=11.50n | | -3a^2=-11a-130 | | 10x+23x-7=276 | | 4h+24=24 | | 5-2x=15-x | | 3(2z+4)=6(5x+2) | | (x^2+5x)-2=2x | | 90x+35=80x+75 | | 6(2x+8)-12x=48 | | (8/(2x))+(3/x)=(7/4) | | 2-5x=9x-16 | | x+9+x+9=5x+9 | | -135=-5(-6N+3) | | 2(x+4)/(5)-3x=-1 | | -26/7x8/1 | | -11n^2+2n+2=7 | | 12x^2+21xy-45y^2= | | -x/6=-12 | | 10=70(1.15)x | | -3x-6=14+2x | | -2b^2-11b=-23 | | 2(2s-2)+14=3(s-1)-(2s+4) | | -3x-6=14+2 | | 10x3/2 |