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)
53 = -3*a-(3*a)-1 // + -3*a-(3*a)-1
3*a-(-3*a)+1+53 = 0
3*a+3*a+1+53 = 0
6*a+54 = 0 // - 54
6*a = -54 // : 6
a = -54/6
a = -9
a = -9
| 5m+4+7m=124 | | 1+t+7t=-47 | | 6b+3-2b=11 | | 9-b-4b=-31 | | 10+4t+3t=-32 | | 5t-7+4t=47 | | -7k-7+6k=-2 | | 69=6d+6d-3 | | 1+x+6x=85 | | 15=m-3m+3 | | 3+3a+4a=45 | | 3k-3+6k=-21 | | -57=4a+2a-3 | | -9=-7a+5a+7 | | 3+3m+7m=83 | | 88=6n+3n+7 | | 1+6x-3x=34 | | 2=2b+2b-2 | | 4m-8+6m=82 | | 1+3m+7m=-9 | | 4a+7+7a=106 | | 78=4n+3n-6 | | 101=5x+3x+5 | | -4+5a+5a=36 | | -18=3w+2w+7 | | 2k+6+7k=78 | | 85=3d+7d+5 | | 7d-9+3d=91 | | 2+x+4x=-58 | | -b+7-4b=-48 | | 6b+3+7b=16 | | -2d+7+d=4 |