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)
5/3 = 105/n // - 105/n
5/3-(105/n) = 0
5/3-105*n^-1 = 0
-105*n^-1 = -5/3 // : -105
n^-1 = 1/63
-1 < 0
1/(n^1) = 1/63 // * n^1
1 = 1/63*n^1 // : 1/63
63 = n^1
n = 63
n = 63
| 8x-5=3x-8 | | 4(5x+6)=-116 | | 7/6=56/n | | 3(4a+6)+2=28 | | -2x-4=-4x+8 | | 6k^2-12k= | | n/39=10/13 | | 2x-0=x+15 | | 6x-3=47+6 | | 2sinx=-1 | | 4x+3=66-5x | | 0.40x+0.40(90)=0.20(92) | | 2/n=5/7.5 | | 7x+114=3x+120 | | 7(3k+12)=3(-6-8k)-6k | | -x+7+6x=7 | | 4h+0.3=0.75 | | -5-3x+7x=-49 | | 4/n=8/3 | | -0.5u+0.6=0.165 | | -x+1-4x=-49 | | -21+4y=4y | | 4x-8+7x=-19 | | 6(5b+4)=14 | | Cos2x=1/2 | | 5/(x-7 | | 91=7x+7(2x-11) | | 9=x+10 | | -28+32+x=-30 | | y/5-16=84 | | n+(n+1)=205 | | -3(-2x-11)=9-2x |