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 = 0
a = 0
a = 0
a in (-oo:0) U (0:+oo)
12 = 36/a+17 // - 36/a+17
12-(36/a)-17 = 0
12-36*a^-1-17 = 0
-36*a^-1 = 5 // : -36
a^-1 = -5/36
-1 < 0
1/(a^1) = -5/36 // * a^1
1 = -5/36*a^1 // : -5/36
-36/5 = a^1
a = -36/5
a = -36/5
| 4/5-2/9 | | y+3/4=1/2 | | x^2+3x+18=-x+6 | | 8(3)(1*b)= | | 18x^2-3x=1 | | 1/7+3/49 | | 2/15+1/3 | | z^3-z^2+2=0 | | 3x+70-7x=50 | | x+2x+x= | | 2x+5+3x=45+ | | 2x+5+3=45+ | | 25y-8=7-35y | | 10(x^2+4)=120 | | 9+6n+n^2=0 | | 4+6=20 | | 2x/4=8,5 | | 0=ln(x^2-3x+1) | | 2(3x-1)=14-x | | 50=10-5x | | 1+2(1+2)+1+2= | | F-4=42 | | 3(2x-5)-4x=5x+1 | | 18+b=36 | | -2*-3*2*-1= | | H(x)=16t^2+128t | | 3k/2-k+3/3=8-k+2/4 | | 4v+16=80 | | x/4=7/3 | | 3(4x-2)=-2(2x+1) | | x/3-9=12 | | 5x+10=10840 |