If it's not what You are looking for type in the equation solver your own equation and let us solve it.
t in (-oo:+oo)
t+9 = 3*t-9 // - 3*t-9
t-(3*t)+9+9 = 0
t-3*t+9+9 = 0
18-2*t = 0 // - 18
-2*t = -18 // : -2
t = -18/(-2)
t = 9
t = 9
| 6n+3=3n+39 | | 5n+3=-2n+17 | | -5k+3=-81+2k | | 1-2w=6w-79 | | 3+4w=-4w+19 | | -7x+3=83+3x | | 3c^2-4c-15=0 | | k-4=4k-19 | | 6a-5=-a-5 | | 10+7m=5m+0 | | -b-1=2b+14 | | 7n-7=-12+6n | | -7x-10=-10+6x | | 2-3x=3x-52 | | -9+7w=-6w+4 | | 5k+5=-127-6k | | 2+7x=4x+35 | | -5k+1=-2k+31 | | 3d-1=7d+47 | | -3m-6=7m-76 | | 2n+1=-5n+15 | | -5w+6=7w+78 | | b+5=-15+3b | | -3-2n=5n-87 | | 1+7m=3m+29 | | -3n+5=-7n-11 | | -n-4=56+4n | | -6b-7=6b-139 | | n+5=2n-3 | | 9+4x=-3x+79 | | 9+6m=4m+11 | | t+1=7t+67 |