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)
-3*w-9 = -45 // + 45
45-3*w-9 = 0
36-3*w = 0 // - 36
-3*w = -36 // : -3
w = -36/(-3)
w = 12
w = 12
| -3w-5=-6 | | -3w-3/5=-8/5 | | -3w-3/5=-57/20 | | -3w-2/9=-164/9 | | -3w-1/7=-106/7 | | -3w-1=-16/7 | | -3w+9=13/2 | | -3w+5+3/4w=13/2 | | -3w+4/9=-5/9 | | -3w+4/5-7w=62/15 | | -3w+3/4-w=3/4 | | -3w+3/10=-19/20 | | -3w+10-4w=15 | | -3w+1/2=-71/2 | | -3w+1=7 | | -3w+1=-45/11+5w | | -3t=9/7 | | (x^2-9)(1-x)=0 | | -3t=1/2 | | -3t=-27/11 | | -3t=-3 | | -3t=-24 | | -3t-6=-15 | | -3t-5+t=17 | | -3t-3=-23/9-t | | -3t-2=-2 | | -3t-1/3=-10/3 | | -3t+9=21 | | -3t+7=t-33 | | -3t+7=32/5 | | -3t+5/6=-49/6 | | -3t+5=71/10 |