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)
k-(6*k)-6 = -61 // + 61
k-(6*k)-6+61 = 0
k-6*k-6+61 = 0
55-5*k = 0 // - 55
-5*k = -55 // : -5
k = -55/(-5)
k = 11
k = 11
| -5a+3+7a=7 | | 7+2x+4x=-23 | | -6m+9-7m=-30 | | 2b+6-3b=5 | | 6t-10+4t=110 | | 4m+7+6m=-53 | | -8+3t+5t=0 | | 7=7m+7m-7 | | -3n+10+2n=20 | | 17=-3b+5b-5 | | 3a+4+7a=124 | | -7a-3+3a=29 | | -1-6w+2w=-25 | | 4=-5k+4k+1 | | 6=-2t+3t+3 | | 33=k+4k+8 | | 6m-9+m=40 | | 37=5w+2w+2 | | 2b+4+5b=11 | | -7d+7+4d=-20 | | -16=-3a+5a+2 | | 11=6n+2n-5 | | -d+1+5d=-23 | | -5n+8+4n=5 | | -5n+8+n=0 | | 11=2d+4d+5 | | -9+5k+6k=-31 | | 2t+8+5t=-41 | | 3b-6-5b=-26 | | 7n+8-6n=20 | | -1+5a-4a=6 | | 7b+5-4b=14 |