If it's not what You are looking for type in the equation solver your own equation and let us solve it.
k in (-oo:+oo)
k-5 = 2*k-17 // - 2*k-17
k-(2*k)-5+17 = 0
k-2*k-5+17 = 0
12-k = 0 // - 12
-k = -12 // * -1
k = 12
k = 12
| -4b+9=-b+6 | | -4x-9=7x+79 | | 4a-1=-7+7a | | 5m-6=7m+6 | | 1+4b=6b-3 | | 8+4x=6x+4 | | 6m-8=-3m-116 | | 5t+1=36-2t | | 6+2d=-6d-10 | | 6x+2=10+2x | | -6x+1=3x-71 | | 7m+5=m+71 | | w+1=4w-5 | | 10+3n=6n+25 | | -5+6n=n+15 | | 6d+2=7d+7 | | 8-7w=w+8 | | -a+3=a+11 | | -5-5t=-2t-11 | | 7x+10=-10+2x | | -d+8=6d+43 | | -5-4n=-7n+16 | | 2x+10=-x+37 | | 4x-4=3x-11 | | a-9=33+7a | | -2x+10=-22+2x | | 4x+4=44+2x | | -n+3=8-6n | | 4x+4=44+40 | | -w+10=-78+7w | | -1+2a=-3a-46 | | -4m+10=6m+30 |