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/X+1/X+11 = (21/11)*X+33 // - (21/11)*X+33
1/X-((21/11)*X)+1/X-33+11 = 0
(-21/11)*X+1/X+1/X-33+11 = 0
2*X^-1-21/11*X^1-22*X^0 = 0
(2*X^0-21/11*X^2-22*X^1)/(X^1) = 0 // * X^2
X^1*(2*X^0-21/11*X^2-22*X^1) = 0
X^1
(-21/11)*X^2-22*X+2 = 0
(-21/11)*X^2-22*X+2 = 0
DELTA = (-22)^2-(2*4*(-21/11))
DELTA = 5492/11
DELTA > 0
X = ((5492/11)^(1/2)+22)/(2*(-21/11)) or X = (22-(5492/11)^(1/2))/(2*(-21/11))
X = -11/42*((5492/11)^(1/2)+22) or X = -11/42*(22-(5492/11)^(1/2))
X in { -11/42*((5492/11)^(1/2)+22), -11/42*(22-(5492/11)^(1/2))}
X in { -11/42*((5492/11)^(1/2)+22), -11/42*(22-(5492/11)^(1/2)) }
| (1/x)+(1/5)=2 | | (1/x)+(1/2x)=(1/13) | | (1/x)+(1/(x-1))=1/4 | | (1/x)+(1/(x+4))=(1/15) | | (1/x)+(1/(x+2))=(1/2) | | (1/x)+(1/(x+11))=(21/(11x+33)) | | (1/x)+((3x)/(5x-2))=0 | | (1/w-3)-(1/5w-15)=4/5w-15 | | 3x-22=8x-18 | | (1/w-1)-(3/4w-4)=1/4w-4 | | (1/s+a)+1/s+b=1/c | | (1/r)=(1/2)+(1/3) | | (1/p)+(12/(p-18))=p/(p-18) | | 12x=7x+40 | | (1/p)+(1/p-1)=-2 | | (1/p)+(1/(p-1))=-2 | | (1/m)+(1/2m)=1/2 | | (1/j)+(1/b)=(1/f) | | 15y^2-4y-4=0 | | 4-(-1)=g | | (1/a)+1=(6/a) | | (1/9-3x)(1/5+2x)=0 | | (1/9*x)+(1/10*x)=15 | | (1/9)x=600,000 | | (1/9)x-1=(1/2)x+(1/6) | | m=(-1)-4 | | (1/9)x-12=24 | | 0.8(5x+15)=2.6-(x-3) | | (1/9)3t+5=(1/243)t-6 | | (1/9)-(2/3)b=1/18 | | (1/9)(3t-9)=(10/9)t-(t+9/18) | | -10=4-a |