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-4*k-10 = -13 // + 13
k-4*k-10+13 = 0
3-3*k = 0 // - 3
-3*k = -3 // : -3
k = -3/(-3)
k = 1
k = 1
| -10=-4m+2m-4 | | 6+6k-2k=-26 | | -2+3m-2m=-14 | | 7b-4-5b=-4 | | 6-7t+t=-12 | | -51=5t+4t+3 | | -1+6w-4w=7 | | 18=b+4b+3 | | n+3+n=13 | | 8+2b-b=19 | | 2n-9+n=6 | | 4-6a+7a=15 | | 98=7w+6w+7 | | 4w+3+6w=53 | | 5+6m+2m=101 | | -5+2m-6m=-49 | | 6x+4+x=32 | | -2n-9+5n=6 | | 6k+4-4k=14 | | -4b+8-6b=-92 | | 5m+6+5m=-74 | | 4n+3+3n=52 | | 10+5b-b=50 | | 29=-5k+3k+7 | | -10+7n+6n=-101 | | -d+10-d=6 | | y-3=10/17(x+7) | | 9=5k-4k+9 | | -4+5w+3w=12 | | 5a+8+5a=8 | | 7a+1+4a=122 | | -9=4x-5x+3 |