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)
2*m+7*m+4 = -50 // + 50
2*m+7*m+4+50 = 0
9*m+54 = 0 // - 54
9*m = -54 // : 9
m = -54/9
m = -6
m = -6
| -26=-3x+5x-6 | | 5+6k-3k=5 | | 6+3k-2k=4 | | -40=2n+5n+9 | | 65=6a+4a-5 | | 6d-6-4d=-18 | | 6d+5+2d=53 | | 2w+3+2w=-25 | | 10+4d-5d=14 | | -6k-6+5k=-17 | | -3k-8+5k=-32 | | -9-2k-2k=-45 | | -9=5m-2m+9 | | -6t+8-7t=-44 | | -3a-1-6a=-1 | | -1=5n+4n-10 | | 21=-3x+7x+9 | | 28=-7d-3d+8 | | 26=-7k+k-10 | | 8-5d+6d=5 | | -113=3w+7w+7 | | 8-4n-4n=0 | | m+8+5m=8 | | 10+7k+6k=88 | | 7m+10+m=-78 | | 3m+4-7m=-40 | | 3n+2-5n=2 | | 8+7w+6w=-148 | | 3a+3+7a=23 | | -w-6-4w=-46 | | 3d-4+4d=10 | | 8+7b+b=80 |