If it's not what You are looking for type in the equation solver your own equation and let us solve it.
n in (-oo:+oo)
3*n+4*n+8 = 8 // - 8
3*n+4*n-8+8 = 0
7*n = 0 // : 7
n = 0
n = 0
| -10-6b+4b=-24 | | -5+5a+3a=19 | | -6+4t+t=4 | | -10=6w+6w+2 | | 7-6n+7n=-5 | | -7-w-w=-9 | | 55=4k+5k-8 | | 4n+5-5n=7 | | -8+4m+m=-68 | | -2+a-6a=38 | | 2m+9+2m=9 | | -7+7n+5n=-103 | | 4k+5-k=-31 | | d+4+7d=-20 | | 108/x^2-4x | | t=4m+4u | | 4d+7-3d=0 | | -11=-6d+5d-7 | | 67=-b+6b+7 | | -t+9+3t=21 | | 33=3m+5m+9 | | 1+3k+k=25 | | 5b+2+5b=52 | | 10+2k-3k=4 | | 3w+3+5w=-53 | | 3m+8-2m=12 | | x+4-4x=4 | | 2n-1+n=-22 | | 13=2a-4a+7 | | (3x+1)2=49 | | -4a+6+7a=15 | | 1-x-1/3=x+1/2 |