If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( a )
a+5 = 0
a-11 = 0
a+5 = 0
a+5 = 0
a+5 = 0 // - 5
a = -5
a-11 = 0
a-11 = 0
a-11 = 0 // + 11
a = 11
a in (-oo:-5) U (-5:11) U (11:+oo)
-((2*a)/(a+5)) = 6/(a-11) // - 6/(a-11)
-((2*a)/(a+5))-(6/(a-11)) = 0
-2*a*(a+5)^-1-6*(a-11)^-1 = 0
(-2*a)/(a+5)-6/(a-11) = 0
(-2*a*(a-11))/((a+5)*(a-11))+(-6*(a+5))/((a+5)*(a-11)) = 0
-2*a*(a-11)-6*(a+5) = 0
16*a-2*a^2-30 = 0
16*a-2*a^2-30 = 0
2*(8*a-a^2-15) = 0
8*a-a^2-15 = 0
DELTA = 8^2-(-15*(-1)*4)
DELTA = 4
DELTA > 0
a = (4^(1/2)-8)/(-1*2) or a = (-4^(1/2)-8)/(-1*2)
a = 3 or a = 5
2*(a-3)*(a-5) = 0
(2*(a-3)*(a-5))/((a+5)*(a-11)) = 0
(2*(a-3)*(a-5))/((a+5)*(a-11)) = 0 // * (a+5)*(a-11)
2*(a-3)*(a-5) = 0
( a-3 )
a-3 = 0 // + 3
a = 3
( a-5 )
a-5 = 0 // + 5
a = 5
a in { 3, 5 }
| 0.05(7x+36)=0.4x+6 | | z-6z=4z-3-z | | (x-6)/2=14 | | (-4/5)x-(3/7) | | 3x+2-6x=7+2x | | 734/6 | | x-6/2=14 | | -40y^9/-5Y^3 | | (x-1)(-x^3+5x^2+2x+18)=0 | | 5y-1+y+35=5+6y+35-2y | | -12(5x-15)=9x+47 | | -2x+1/3y=-1 | | 5(2x+5)=6(5x-4) | | (x-1)(-x^3+5x^2)=0 | | -2y(3y+5)=-4 | | (x-8)(x-4)=-4 | | -12x(5x-15)=9x+47 | | 8-4(q-2)=4 | | 2.5x+2.1=6.8 | | 8-9+x/18 | | p^3-3p^2+8p=-48 | | -1-5r=-16 | | xa+b^2=ba-x^2 | | 5.6(4+4x)-11.4=11 | | 5(2k+11)=2(12+5k) | | 3v^2+3=7 | | (3x+6)+(x+1)=4(x-1)+7 | | -2x^2=-7x+8 | | 5a-(2x+c)=4(a+c) | | (2/(3x+6))+(3/(4x+8)) | | 21/2-3y=-1 | | 7(x+2)+2=-7(x-10)-10 |