If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( n )
n = 0
n = 0
n = 0
n in (-oo:0) U (0:+oo)
3/4 = 27/n // - 27/n
3/4-(27/n) = 0
3/4-27*n^-1 = 0
-27*n^-1 = -3/4 // : -27
n^-1 = 1/36
-1 < 0
1/(n^1) = 1/36 // * n^1
1 = 1/36*n^1 // : 1/36
36 = n^1
n = 36
n = 36
| -4(3+x)=-8 | | 5a=5(4) | | 2(4p+7)=16 | | 2x-1/5=x/3 | | 11+(-4x)=x+16 | | 22-31=9z+24 | | 2-3x=-x-5/6 | | -4(-8+4x)=-8 | | 40x+38=125 | | 8f+14=12f-6 | | 3x+9+5x=-81 | | 3(x-2)+11=2(x-4)+x+13 | | -(2-2a)+8a=6+2a | | 5/6T-3=-9 | | 3.6y-16.1=6.3y+5.5 | | 5(y+4)-12=19 | | 6k+8=2k | | -4x=-3.2 | | 2-3x=x-5/6 | | mx^2+(m^2-2)x+2(m+1)=0 | | 72-2=-88 | | 5x+5=8x-2 | | -9x=y+5 | | 3x+10=yx+8 | | 2.2r-3=31.2 | | 5x-4(2x-3)=42 | | 147*5/3 | | 4(z+3)+2z=42 | | 4(3+7x)=292 | | 9+70=2 | | H(t)=-16t^2+35t+1.7 | | 20/24=5/n |