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)
7/n = 35/88 // - 35/88
7/n-(35/88) = 0
7/n-35/88 = 0
7*n^-1 = 35/88 // : 7
n^-1 = 5/88
-1 < 0
1/(n^1) = 5/88 // * n^1
1 = 5/88*n^1 // : 5/88
88/5 = n^1
n = 88/5
n = 88/5
| 5(x+3)=9(x-21) | | (-10/Q)+1=-1 | | 3+n/9+15 | | -4+5x+7x=80 | | 4(2x-3)=2x+12 | | q/42=15/7 | | 4/9=b/15 | | 6x+(-4)=-52 | | x+x+2=-256 | | -2+7x=6x-8 | | 2/14=m/63 | | -85=17x | | 1/2(x-2)^2+4=0 | | x^5+18x^4+81x^3=0 | | 4x^3+24x^2-49x-294=0 | | 6t+t=0 | | 6t+6=0 | | x^2-15x-18=0 | | z^2-15z-156=0 | | -47=-7x+3x-7 | | x-13=81 | | -2(x-6)-65=5x-7(x-1) | | z^6+8=0 | | -2(3y+3)=3(1-2y)-9 | | -2(22x-6)-65=5x-7(x-1) | | 13x+15-5x=-3x-18 | | 23+x=72 | | 6x+10-4x=6+x+5 | | 6(x+4)-(6x+24)=0 | | -6+y=23 | | 9x-13x=7 | | -17w+40w=8w^2+5w |