If it's not what You are looking for type in the equation solver your own equation and let us solve it.
m in (-oo:+oo)
-m-(7*m)-5 = -53 // + 53
53-m-(7*m)-5 = 0
53-m-7*m-5 = 0
48-8*m = 0 // - 48
-8*m = -48 // : -8
m = -48/(-8)
m = 6
m = 6
| -5+a+5a=-59 | | 19=2k+7k+1 | | -3k+9+k=3 | | -2k+9-3k=-36 | | -6w-9-6w=-141 | | k-1+5k=65 | | 83=-7a-7a-1 | | 5+3m+3m=-55 | | 3+4a+5a=3 | | -9=5d+d-3 | | -9+3w+4w=26 | | -3w+7+5w=27 | | -6a+9+3a=6 | | -4+4n+3n=24 | | 4+3a+a=-4 | | 1=-4b-5b+1 | | -1+7n-6n=-10 | | -2b-9-6b=39 | | -22=-t-2t+2 | | 4t+3-7t=-15 | | -123=5a+6a-2 | | 3w+8-w=16 | | -4=2d-3d+3 | | 15=-4b+2b+1 | | 8c+4-7c=-25+8 | | 3-5x+x=39 | | 9+7x-x=75 | | 37=3k+2k+7 | | 18=5a-3a+8 | | -74=-3k-3k-2 | | 5x-2+5x=18 | | 6w+9+6w=-75 |