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)
(5*x)/x-3 = 15/x-3+8 // - 15/x-3+8
(5*x)/x-(15/x)-8-3+3 = 0
(5*x)/x-15*x^-1-8-3+3 = 0
-15*x^-1 = 3 // : -15
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
| 6x-78/4 | | (5-3i)/(2+6i) | | x-7/3=5 | | 11x-8x=42 | | 3/5y-10=11 | | 11x+20=29 | | 500-3x=680-6x | | 500+3x=680-6x | | 5y-(y-2)=5 | | 6x+11=26 | | 4x+12=-4 | | 4x+5y=100 | | (3b+7)+(8b+3)= | | 3=3x-15 | | 2x+50=12x-10 | | -63+46w=25w-147 | | 7/c-2/c=4/c-1 | | z^2-5iz-4=0 | | 15/2p-13/2p | | 23h-89=63+42h | | 5ln(4x-2)-16=9 | | x^4+11x^3-44=0 | | 16x-19=113-6xz | | 63d-44=-140+47d | | 3x^2+x-1900=0 | | 63d-44=140+47d | | -21+6x=33+9x | | 12-3x/x^2-8x+16 | | 5(g-2)+g=6g-24 | | x=log(3)15 | | x^4+11x^2-44=0 | | x^2+11x^2-44=0 |