If it's not what You are looking for type in the equation solver your own equation and let us solve it.
k in (-oo:+oo)
-33 = 9-k-(6*k) // - 9-k-(6*k)
k+6*k-33-9 = 0
7*k-42 = 0 // + 42
7*k = 42 // : 7
k = 42/7
k = 6
k = 6
| d+7-4d=43 | | -7d-6-6d=-123 | | 9=3x-4x+10 | | -9+4w+2w=51 | | 65=3k+3k-1 | | 2n+6+3n=51 | | -7t+4-7t=-108 | | -50=5b+6b+5 | | 1=-6t+4t+1 | | 6+3b+3b=-48 | | 3=4x+27/5 | | 1+3n+4n=29 | | -9+6w-w=36 | | 2d-3+7d=-30 | | -7+3t+t=37 | | 7-3(x+1)=6 | | -3d-10+2d=-20 | | -2d+5+4d=5 | | -2n-2-4n=-56 | | 98=7b+2b-10 | | -y+178=118 | | 191-x=146 | | -2g-12=-60 | | -6-n+6n=9 | | 5m+8+4m=44 | | 6d+7+5d=18 | | 5w-7+3w=17 | | 50=2k+6k+10 | | 73=3n+7n+3 | | x-10-4x=-7 | | 4t-1=14 | | -2-2t-3t=-17 |