If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
2-(4*a) = -38 // + 38
2-(4*a)+38 = 0
2-4*a+38 = 0
40-4*a = 0 // - 40
-4*a = -40 // : -4
a = -40/(-4)
a = 10
a = 10
| 7+3n=10 | | 8+15m-7=9m+61-6m | | 3x^3+7y=18 | | 2+6a=-4 | | 4/5w=2/3 | | -3+7k=32 | | 3+5w=23 | | 6b-7=41 | | 7a+9=86 | | 6b-6=18 | | -6-2w=-2 | | 2k-1=-15 | | -7+6k=47 | | -10+2m=6 | | -3t-6=-42 | | -3+5k=-18 | | X-3/9=-1/9 | | 6d-7=65 | | 3k+1=-17 | | -5m+8=-2 | | 4w-2=-6 | | 7t-8=55 | | -8-6x=-14 | | -3t-4=-40 | | -8+7k=6 | | -4k-2=-2 | | -3+6t=57 | | M-3/8=5/8 | | -4k+9=53 | | -5k+5=-45 | | 4d-5=-13 | | -7a+8=71 |