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)
7-(5*n) = 3*n+55 // - 3*n+55
7-(5*n)-(3*n)-55 = 0
7-5*n-3*n-55 = 0
-8*n-48 = 0 // + 48
-8*n = 48 // : -8
n = 48/(-8)
n = -6
n = -6
| 7d+10=2d+70 | | -2k+9=-51-7k | | 6w-6=10+2w | | 5+4d=7d-7 | | 4-6b=7b-113 | | 5w+4=2w+16 | | -5a-7=3a-15 | | 5k+9=-1+6k | | 7t+5=6t+16 | | x+2=-3x+50 | | n+4=64+6n | | 7m+5=m+77 | | -2t+9=-27+4t | | 5-2d=7d+23 | | n+3=3n+13 | | -7t+7=-11-t | | 4a+3=6a+23 | | 3k-4=-2k-39 | | w+9=7w+9 | | 7+2k=6k-29 | | -6b+2=b-40 | | -9+7k=4k-42 | | -7m+3=-69+m | | -6m+1=4m-109 | | -6t+7=-65+2t | | 6n+4=40-6n | | 6a-5=-4+5a | | 3k-5=-6k-113 | | 3k-4=7k-36 | | 3+3n=n+11 | | 7+2b=-7b-74 | | x+4=-4x+4 |