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)
10/n = 2/9 // - 2/9
10/n-(2/9) = 0
10/n-2/9 = 0
10*n^-1 = 2/9 // : 10
n^-1 = 1/45
-1 < 0
1/(n^1) = 1/45 // * n^1
1 = 1/45*n^1 // : 1/45
45 = n^1
n = 45
n = 45
| 40x+(1.5x*5)=500 | | 24m-20n=0 | | 2/7=4/a | | 354=3x-7 | | 4(x+4)=2(x-5) | | -11-4x=5x-(11+17) | | 1/2x-3=10 | | x-5x+2=-18 | | 4x=x^2+7x | | 18y-14x=0 | | 3y-2x=17 | | -2x-2=8x+20 | | y+3=2x-10 | | kx^2+(3-2k)x-6=0 | | -10x+14=8x+20 | | 83+7y=10x+120 | | (20y^2-55y-15)/(3-y) | | 2xy-10x+4y=1 | | 2xy-10x+4y=0 | | 5x=3y-4(xy-2) | | 6+-v=v+16 | | x^2-x+0.6=0 | | 10+2n=-6 | | 8v+77=25-5v | | 4w-1=7w+2 | | 25=p+9.9 | | 3x^2+5x-23=8x^2-4x-7 | | 7x-9=3x-2+5 | | -4x=x-20 | | (3a-4)+(6a+2)=5a+22 | | 6a+6.3+9a= | | 3a+7a+9= |