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)
12/n = 4 // - 4
12/n-4 = 0
12*n^-1 = 4 // : 12
n^-1 = 1/3
-1 < 0
1/(n^1) = 1/3 // * n^1
1 = 1/3*n^1 // : 1/3
3 = n^1
n = 3
n = 3
| 5x+4-2=26-3x | | 7y+2(2y+13)=180 | | 4x^2-4I=0 | | x^2-22=-57 | | 3=v/4-16 | | 3x+1+2(2x+2)=180 | | 3x=a-bx | | A=3x+bx | | -4x-8=-7x-7 | | 3x+15+2x+9=180 | | X+35=11 | | 2tan(3x)=4 | | 20z+140=4z-4 | | xy+xz+xt+yz+yt+zt=x^2+y^2+z^2+t^2 | | 7b+14=3b+18 | | 1/8×2/14 | | 5x+25+x+36=180 | | 3(d-4)=1 | | 3c+30=8c+6 | | 4c+7=25-2c | | 6x+6=9x(6-5x) | | 3x^2+7=17 | | 5t-4=3y+6 | | -15/16(-1/2 | | 13x+2=40 | | 20+4x=29+7x | | 6(w+4)=60 | | y-72/5=5 | | 15x+30=40x | | 7/5x-9=1/2x | | 5y-65xy= | | (3x-2)(5x+2)= |