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)
(1/2)*x-((2*x)/3) = 6/x // - 6/x
(1/2)*x-((2*x)/3)-(6/x) = 0
(1/2)*x+(-2/3)*x-6*x^-1 = 0
-1/6*x^1-6*x^-1 = 0
(-1/6*x^2-6*x^0)/(x^1) = 0 // * x^2
x^1*(-1/6*x^2-6*x^0) = 0
x^1
(-1/6)*x^2-6 = 0
(-1/6)*x^2-6 = 0
DELTA = 0^2-(-6*4*(-1/6))
DELTA = -4
DELTA < 0
x in { }
x belongs to the empty set
| 70/8 | | 1/5y+4/5y=5 | | n/8+19=3 | | N=2.5 | | -17.5-(5.6)= | | 2.7t-4=4.1 | | 5x=8x-2 | | 27/18=42/n | | 22+6x-15=8x+13-5x | | x-(-2x+1)=3 | | 3+4*7-5=n | | 20+(5+x)=-10 | | 1/3(4-4x)=-4 | | 10x-(3x-8)=57 | | 2x+10+y=64 | | 3X^2+X-7=4X | | 6(x+1)+42=-2r | | 18=5a-29+3 | | 46=4m+2 | | 3x+109=11x-11 | | 25x^4-30x^2+9=0 | | 36=27k/25 | | -9(x-6)=-6x+30 | | 39+.30m=45+.25m | | p-4=10 | | 5(k-2)-8=-34 | | -8y+12=7(y+6) | | 15x+7y=240 | | -7+w=-3 | | -4+(x+3)=6 | | -7(u+6)=-3u-18 | | c/4-c-1/8=7/8 |