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+1/x = 4 // - 4
(2/3)*x+1/x-4 = 0
2/3*x^1+1*x^-1-4*x^0 = 0
(2/3*x^2-4*x^1+1*x^0)/(x^1) = 0 // * x^2
x^1*(2/3*x^2-4*x^1+1*x^0) = 0
x^1
(2/3)*x^2-4*x+1 = 0
(2/3)*x^2-4*x+1 = 0
DELTA = (-4)^2-(1*4*(2/3))
DELTA = 40/3
DELTA > 0
x = ((40/3)^(1/2)+4)/(2*(2/3)) or x = (4-(40/3)^(1/2))/(2*(2/3))
x = 3/4*((40/3)^(1/2)+4) or x = 3/4*(4-(40/3)^(1/2))
x in { 3/4*(4-(40/3)^(1/2)), 3/4*((40/3)^(1/2)+4)}
x in { 3/4*(4-(40/3)^(1/2)), 3/4*((40/3)^(1/2)+4) }
| 20+24x-4x^2=0 | | 1/2m-4=5 | | -8x^2-12x+12=0 | | -7y+2=8y+8 | | 8x^2+3=35 | | 2x-5y-2=0 | | 19-p=3p-8 | | 5h+5h+-18h=8 | | 70c^2d^2-190cd+60= | | -6=-6x+5x+6 | | 1/2x+16=36 | | x-8.7=-4.6 | | -2/3x+1/9x+11/15 | | -7r+2r=20 | | x-8.7=4.6 | | 10c/4-16/2=57/8 | | 3d-12ford=10 | | 9=2x+7x+9 | | 3+3+5X^2-8/2+9 | | A-a+4a-3=13 | | 3+35X^2-8/2+9 | | 2x+2/2-2x/x-2=x | | 3y-28=-21+2y | | 3t^2+6t+3= | | 7y=2y-3 | | -2/7+y=-1/2 | | 3(x-2)-5(x-3)=17 | | 8m-5m=18 | | 6t-7=-17+4t | | -6x-6+4x=-26 | | 14z-13z+4=13 | | 3+9/4=9/x+4 |