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)
(2/3)*x-2 = 1/x-4 // - 1/x-4
(2/3)*x-(1/x)-2+4 = 0
(2/3)*x-x^-1-2+4 = 0
2/3*x^1-1*x^-1+2*x^0 = 0
(2/3*x^2+2*x^1-1*x^0)/(x^1) = 0 // * x^2
x^1*(2/3*x^2+2*x^1-1*x^0) = 0
x^1
(2/3)*x^2+2*x-1 = 0
(2/3)*x^2+2*x-1 = 0
DELTA = 2^2-(-1*4*(2/3))
DELTA = 20/3
DELTA > 0
x = ((20/3)^(1/2)-2)/(2*(2/3)) or x = (-(20/3)^(1/2)-2)/(2*(2/3))
x = 3/4*((20/3)^(1/2)-2) or x = -3/4*((20/3)^(1/2)+2)
x in { -3/4*((20/3)^(1/2)+2), 3/4*((20/3)^(1/2)-2)}
x in { -3/4*((20/3)^(1/2)+2), 3/4*((20/3)^(1/2)-2) }
| 5(7-y)-47=25y-6(2+5y) | | 3w+3=8 | | 3(4w+4)=8 | | 3(4w+4)=32 | | 7.18/3.14 | | 5(f-4)=-35 | | -8=5x-23 | | 10(s-10)=-209 | | 81-(5x+14)=5(x+9)+x | | 7.18*3.14= | | z/8-5=8 | | a^4+2a-2=0 | | 3x-9=7x-11 | | 2r+4=30r+8 | | 5b=b+4b | | 0.66+0.16t=2.08t-0.78 | | 4.5x+51.1=20.1-11.0x | | 7[9-x]=0 | | 500/179.6 | | x+7+6=2 | | 4.905t^2+2t=100 | | 9+13s-1=9s+78-6s | | 218*23=214x | | 218*45=214x | | 218*74.7=214x | | 2=4/3-5/c | | 218*68=214x | | 5.6+1.5n=2.30 | | 218*50=214x | | 218*18.5=214x | | X-8.1=-4.8 | | 218*9.8=214x |