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)
3*m-7 = -7 // + 7
3*m-7+7 = 0
3*m = 0 // : 3
m = 0
m = 0
| 5a+3=63 | | -2+4w=-10 | | -5b+6=-54 | | 3t-3=-12 | | 5+2t=-1 | | 3x+9=-9 | | -2-2k=14 | | 9-2w=-1 | | -1+4m=39 | | 2x-5=; | | 3-4k=-9 | | 5d+2=52 | | 3a+9=12 | | -10+7x=-80 | | -5m+1=41 | | 4m+2=14 | | 3-2w=7 | | 6+5t=-19 | | 5m-10=50 | | 5w-2=43 | | 7d+9=-75 | | 9+3w=-18 | | -x/4=-5/8 | | 4-6w=4 | | 10+3x=37 | | -9+4a=-37 | | -6+4n=-34 | | -4+6x=20 | | 5-4t=13 | | 8+7n=57 | | 7n-1=34 | | -4k+7=35 |