If it's not what You are looking for type in the equation solver your own equation and let us solve it.
w in (-oo:+oo)
-58 = 5*w+2*w-9 // - 5*w+2*w-9
9-(5*w)-(2*w)-58 = 0
9-5*w-2*w-58 = 0
-7*w-49 = 0 // + 49
-7*w = 49 // : -7
w = 49/(-7)
w = -7
w = -7
| -5-4n-7n=-49 | | 20=4m-m+8 | | 7k+3+3k=63 | | 100=3a+6a+10 | | 6n+9+7n=139 | | 7=6a+6a+7 | | 49=-7n-n+1 | | a+3-5a=-17 | | 3+7m+4m=-52 | | 2t+8-4t=16 | | 5b-7-3b=7 | | 5d+7+4d=7 | | 3x+8+7x=-32 | | 106=-7x-4x-4 | | 7-4x+2x=-7 | | -2a+9+a=16 | | -1+4w-2w=-11 | | -6d+9-6d=9 | | 7d+5-3d=41 | | 1=-7n+4n+7 | | -2=-3a+2a+2 | | -9+6a+a=26 | | -3x-5+x=15 | | 2+3t+2t=2 | | 2n-2+5n=-44 | | -23=-b+4b-5 | | d+6-6d=-39 | | 81=7d+d-7 | | -8x+5=-67 | | -15=-7w+5w-3 | | 64=2k+3k+9 | | 36=-2m+6m+8 |