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)
2-3*k-(2*k) = -18 // + 18
2-3*k-(2*k)+18 = 0
2-3*k-2*k+18 = 0
20-5*k = 0 // - 20
-5*k = -20 // : -5
k = -20/(-5)
k = 4
k = 4
| 2=-a+4a-10 | | 1+4m+5m=19 | | 7-2d-3d=-43 | | 83=3a+6a+2 | | 3t-5+t=7 | | 34=-5x-x+4 | | 18=4m-5m+8 | | 18x+15-47x=225 | | -m-3+4m=27 | | t-4+6t=38 | | -5t+5+t=1 | | -9-7b-2b=-99 | | n+7+2n=25 | | -3n-1+5n=1 | | -w+10+6w=50 | | 107=7a+6a+3 | | 6+m+4m=66 | | 4k-6+5k=93 | | 6+3t+2t=-9 | | -4a-9+2a=9 | | 39=7k+3k+9 | | -8+2b-5b=-26 | | -10+2b+7b=-91 | | w-10-4w=-7 | | -6x+7+x=-43 | | -6m-6+5m=-7 | | -7d+1+3d=37 | | x+10+x=-10 | | -8=-4w+2w+8 | | -8+3m-m=-8 | | 10-2d+d=17 | | k+10+k=18 |