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)
10-w = 6*w-39 // - 6*w-39
10-w-(6*w)+39 = 0
10-w-6*w+39 = 0
49-7*w = 0 // - 49
-7*w = -49 // : -7
w = -49/(-7)
w = 7
w = 7
| 8+3b=-6b+44 | | b+7=67+7b | | -6d-6=-38+2d | | -3n+1=-n+5 | | -3+2d=5d+6 | | 7w+3=2w-12 | | -4+5a=4a-14 | | 10-7b=5b-50 | | 6n-4=n+56 | | -3a+8=3a+44 | | 7+7m=-4m+51 | | 2n+10=n+11 | | -m-4=3m-8 | | a+7=21-6a | | 2+3w=-w+10 | | -m+1=-3m+19 | | 8+5b=-b-34 | | 3k+2=6k-22 | | -7k-9=16-2k | | 3b-1=-7+2b | | -6+7x=4x-6 | | 4t+4=t+19 | | 7n+3=3n+47 | | -2t+1=-3t-8 | | -5b-4=4b-49 | | (3x+1/5)(3x+1/5) | | -4m-1=-12-3m | | -7-5d=6d+37 | | 3+5b=-3b-53 | | (3x+1/5)^2 | | -3+7w=6w+7 | | 5d-4=-52-7d |