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)
4 = k-7 // - k-7
4-k+7 = 0
11-k = 0 // - 11
-k = -11 // * -1
k = 11
k = 11
| 2=b-8 | | -7+t=-9 | | w+8=19 | | d+3=-4 | | 7+w=8 | | k+2=4 | | 7+m=2 | | -3=d-5 | | -10+d=-2 | | w+9=8 | | 5+k=14 | | 0=m+8 | | 8+d=19 | | -2b=-4 | | n-4=-3 | | 2k=-2 | | -9+b=2 | | -4b=-40 | | 9=k+6 | | -10=w-1 | | -6m=-6 | | 0=a-3 | | -7+n=-2 | | 6=w+5 | | 5+t=3 | | m+9=-3 | | (2*12)10+4-6= | | n+6=18 | | b/-7=6 | | 7=x-3 | | 5w=5 | | -5+b=5 |