If it's not what You are looking for type in the equation solver your own equation and let us solve it.
b in (-oo:+oo)
2*b+9 = -(4*b)-39 // + -(4*b)-39
2*b+4*b+9+39 = 0
6*b+48 = 0 // - 48
6*b = -48 // : 6
b = -48/6
b = -8
b = -8
| -4b-2=6b-62 | | 2n+1=7n-14 | | -6m-3=5-7m | | 6d-1=-89-2d | | -10-2d=7d+8 | | -4+7n=5n-4 | | 5+4n=n-25 | | -k+1=4k-49 | | 10+4x=5x+21 | | 4b-7=2b-5 | | 6n+1=n+1 | | 2d+8=-5d+29 | | 7x+5=-4x-116 | | 5w+4=6+6w | | -t+4=-7t+52 | | -4b+5=7b-28 | | 5+3m=5m-15 | | 10+7t=-6t+127 | | n-6=-4n+19 | | 9-3k=2k+9 | | 7k+4=-86-3k | | -2k-1=3k-46 | | -7k+1=-3k-15 | | 5-4a=6a-75 | | 3+6n=3n+27 | | 1+4b=7b-26 | | -b+8=-6b+63 | | 5x+4=58-4x | | 10-5m=4m-62 | | x-2=6x+8 | | 5b-8=22+2b | | t+9=-9+3t |