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)
36/a-9 = -5 // + 5
36/a-9+5 = 0
36*a^-1 = 4 // : 36
a^-1 = 1/9
-1 < 0
1/(a^1) = 1/9 // * a^1
1 = 1/9*a^1 // : 1/9
9 = a^1
a = 9
a = 9
| 6v+1+v-3=8 | | 12x-10=7x+15 | | b/7=-5 | | x+15-3x=-2(2x+1)-5 | | 3x+37=0 | | (25+4m)=(2m+65) | | 2x+13-7x=18-16x+11x-5 | | 54+x=126 | | 8/u-(-2)=6 | | 4x+6=9x-12 | | t^2=3t | | 2/3x-7+x | | (16x^2+48x)=0 | | 4(x-3)+3=2x+5 | | 1/2x+5=x | | 3n-10=44+9n | | 3+18/z=12 | | -c+4=16 | | 4y-14=4-2y | | 5z-15=-51+z | | x/3-7=15 | | 2-20=x-5 | | 1+x/2 | | E(21)=2n | | 64=16x^2+48t+64 | | 1+9/2 | | H=16x^2+48t+64 | | 4(3+4x)-3=105 | | 16x^2+48t+64=h | | 3x+5=x+14 | | y/-7=-7 | | 12+7(6r-4)=11(6r-8) |