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)
(4*15)/x = 115 // - 115
(4*15)/x-115 = 0
60*x^-1 = 115 // : 60
x^-1 = 23/12
-1 < 0
1/(x^1) = 23/12 // * x^1
1 = 23/12*x^1 // : 23/12
12/23 = x^1
x = 12/23
x = 12/23
| x*2/4-5=1 | | 2x+6-3x=2 | | x*4/47=207 | | 4/3x5/6x2/3 | | 6*25-(x/75)=190 | | 6*25-x/75=190 | | (x/423)-6=481 | | x/423-6=481 | | 24r+26=180 | | 17-8y=5y-9 | | 7x-8/7x=4-5/2x | | 4-5x-2=(8x-17) | | 5d+20=90 | | -21-3s=-17-12s | | 15+b=24 | | 56-12X=-78-14x | | 4logx=6 | | 4lgx=6 | | 7r+25+17r+1=180 | | 13x+3x+10=90 | | 8/60 | | 5a-21=2a | | 7r+2517r+1= | | c^2+3c+88=0 | | -4n+25=25-3n | | 0.35x=0.55x+5.5 | | 6+2a=-22 | | 3y+3y=90 | | H(2h+1)(h-4)=0 | | 0=-16t+90t | | 2x-5+4x-7= | | 6(x+3)+2x=26 |