If it's not what You are looking for type in the equation solver your own equation and let us solve it.
d in (-oo:+oo)
1 = 2*d-d-6 // - 2*d-d-6
d-(2*d)+1+6 = 0
d-2*d+1+6 = 0
7-d = 0 // - 7
-d = -7 // * -1
d = 7
d = 7
| 16=3x-x-2 | | 4+5b-7b=-2 | | (2m)/(m-3)=(6)/(m-3)+4 | | 5k+3+6k=102 | | 21=3a-6a-3 | | 10+5b-6b=0 | | 7+3x+6x=52 | | -2+3w-6w=-14 | | 5k-2-2k=-26 | | 103=4d+6d+3 | | -31=4a+2a+5 | | 5x-6+3x=34 | | 3b+7+6b=-83 | | 5w+7-3w=21 | | -31=-5w+w+5 | | 7k+9+5k=-63 | | 2t+10-3t=5 | | 7x-10+3x=-10 | | -2k-10-k=14 | | 2-5k-k=-70 | | n-2+5n=28 | | -6a+10-5a=-89 | | 34=7k+6k+8 | | 3a+2-4a=13 | | -6=7k-5k-10 | | 2-2t+5t=-7 | | 9-5n+7n=31 | | -6=-3a-2a+9 | | -5+5a-a=-33 | | 2+6w-w=47 | | -7+3k+3k=29 | | 3b+1+3b=25 |