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 = 125 // - 125
5/x-125 = 0
5*x^-1 = 125 // : 5
x^-1 = 25
-1 < 0
1/(x^1) = 25 // * x^1
1 = 25*x^1 // : 25
1/25 = x^1
x = 1/25
x = 1/25
| -1=-1/2r | | R+6=-1+8r | | V=3.14r^2h-4/3(3.14)r^3 | | 9/4x=36 | | -11=-5/3n | | -4n-3=9 | | -6(k+1)=-3(6k+3) | | 4/15=2x/3 | | 5b+7(b-2)=22 | | n/5=7/5 | | (9x^2)+2x+11=0 | | 56=-8(3r-5)+8(7+4r) | | 196=154+7x-68 | | 35=n+16 | | (2x-8)+(3x-10)=17 | | b/20=4 | | -3(8v+2)=-6+3v | | v+4y-2y+5y=0 | | 3x-8/-2=4 | | 8+v=v+4 | | 9x+-17= | | 7.5(1-3a)=24.5 | | 6x-10=-3x | | 9x-5c=15 | | -2/3=b/6 | | x+8+3x=2x-1 | | -66=3(5k-5)+3(-5+k) | | 2/3-2=-10 | | -5(1-4m)+6m=-83 | | 100=(2x+40) | | 17.5=-9+9.5(b+6.5) | | 5.5x+625=(100+x)(6) |