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)
7*k+6*k+6 = -111 // + 111
7*k+6*k+6+111 = 0
13*k+117 = 0 // - 117
13*k = -117 // : 13
k = -117/13
k = -9
k = -9
| 20=p/240 | | 6/7+6/7m+4/5m=328/315 | | -2/7n+4+1/4n=55/14 | | 25*x^2=-11x+17 | | 7t+3/10-4t=123/10 | | 209/10=-4/5w-6w+1/2 | | 1/3+5/6w+2w=19/6 | | 37/7=-5/7x+4/7x+6 | | 2x+8-5/6x=41/6 | | 2/7+4t+2/7t=-11/14 | | 4x^3-8x-16=0 | | x^2-6x+(3)(3)=0 | | 2n+1+n=-4/5 | | -6t+7+5t=-1 | | 10+2w+6w=50 | | 8+2b+7b=61/11 | | 5k-1-2/7k=-106/7 | | -203/132=-5b+2/3b-3/4 | | -1/5m-8+5/7m=-58/7 | | 8x+80=0 | | 2/9+7b+4/7b=173/63 | | 40/3=3b-1/3b+8 | | -2/9+3/4t+3t=29/72 | | 4+n+3n=8 | | k-4/5+3k=16/5 | | -3/10-2/7x-x=699/70 | | 6d-5+5d=116 | | x^2+8x+80=0 | | 2/7d-9/10+7d=1977/70 | | -4/7+3/4t-1/2t=-17/42 | | 4-3/5n+1/6n=112/15 | | 5/9+5m+2m=151/45 |