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)
2*k-(4*k)-5 = -5 // + 5
2*k-(4*k)-5+5 = 0
2*k-4*k-5+5 = 0
-2*k = 0 // : -2
k = 0
k = 0
| 7b-8+2b=91 | | m-7-7m=-49 | | 3+b-3b=-17 | | b-9-6b=-69 | | -4a-8+3a=1 | | 7m+5+2m=-49 | | x-4+2x=-4 | | 7-2k-5k=-63 | | 119=3m+7m-1 | | 3m+3+m=-37 | | 75=6a+7a+10 | | -2-7t+2t=28 | | 7+3d+2d=57 | | d-8+6d=41 | | 5+5t+3t=5 | | -40=2m-7m+5 | | 43=2b+b+10 | | 29=-2d+6d-3 | | 8x-3x-12x=2-9-1-10 | | -2-6m-2m=-82 | | n+3+2n=33 | | -50=3t+7t-10 | | 22=-3w-2w+2 | | 2-2b+4b=16 | | -3=2w+5w+4 | | -1=2k-k+9 | | -n-6+3n=2 | | -14=-5t+3t+10 | | w+1+3w=1 | | 6+5b+b=-30 | | -48=2t+3t+2 | | 1+4x+x=46 |