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)
6*m+7 = 31 // - 31
6*m-31+7 = 0
6*m-24 = 0 // + 24
6*m = 24 // : 6
m = 24/6
m = 4
m = 4
| 4+4w=0 | | 8+4t=-24 | | 5n+5=-25 | | -7n-10=-94 | | -9+7d=26 | | 7a+1=78 | | 7-6k=1 | | 6k+3=-51 | | 3(x-1)=3+2x | | -6-3k=-9 | | -5n+3=-17 | | -5+4w=-5 | | 7m-7=-70 | | 6a+9=63 | | 7k-5=-47 | | 8-4b=-4 | | -4+6d=-34 | | -7+2b=15 | | -4m-6=-14 | | -3m+3=0 | | 4-3x=-29 | | 4+7a=-45 | | -2b-9=11 | | 4w-9=-41 | | 7n+7=-56 | | 4a-7=-19 | | 2k+1=13 | | 6w+7=61 | | -6m+2=-52 | | -2x-4=18 | | -10+3n=-10 | | 2d-5=9 |