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)
9/18 = 3/x // - 3/x
9/18-(3/x) = 0
9/18-3*x^-1 = 0
-3*x^-1 = -1/2 // : -3
x^-1 = 1/6
-1 < 0
1/(x^1) = 1/6 // * x^1
1 = 1/6*x^1 // : 1/6
6 = x^1
x = 6
x = 6
| 5x+6x-64=48-5x | | 2tan^2(3x)=6 | | 3(2x+4y)=24 | | 9n-5=37+3n | | 4/20=1/x | | 4z-11=-21+9z | | Mt=30 | | x-2000=100 | | (7-m)-(m-7)= | | 2x-1+7x=7x-5 | | X+w=a | | x/10=1 | | 7x^4-50x^3+119x^2-100x+12=0 | | y^4-25*5y=0 | | (mn^2+n)(5mn^2-n)= | | 7-7/8 | | 11x+11=10x+13 | | 1/9y-2=-17 | | 10n-30=4n+8 | | 3(2x-1)=25 | | z/5-6=12/8 | | 18=b/3=3 | | 3x^2+2y^2+12x-4y+10=0 | | 394.36=170+0.79x | | 57x^2-124x+64=0 | | 2x+2x+3=19 | | iz+2z=i | | sin(x)-3sin(3x)=0 | | 14x+12=64 | | 2(-5)sq-7(-2)= | | 7x+3x=80 | | 3x+1x+4x=16 |