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)
5*m-7 = 7*m+13 // - 7*m+13
5*m-(7*m)-13-7 = 0
5*m-7*m-13-7 = 0
-2*m-20 = 0 // + 20
-2*m = 20 // : -2
m = 20/(-2)
m = -10
m = -10
| 3t-9=7t-1 | | 2+2k=3k+8 | | 1-7d=5d+85 | | 8-3d=6d-28 | | 7d+1=d+43 | | 3d+10=-26+7d | | 4w-7=7w-4 | | -2b+4=-4b+6 | | 6m-7=7m-11 | | 7+5x=-5x+127 | | -4n+4=7n-106 | | 4+5t=6t+7 | | -7n+6=83+4n | | -4d+8=5d-28 | | 5a+3=4a+3 | | -4x+9=33-2x | | 2d+6=-7d+42 | | 3n+1=7n+13 | | -6w-9=15-4w | | 6n+10=76-5n | | -8-4t=-2t+2 | | 10-2w=4w-8 | | 3d-2=7d-38 | | 7-2n=-4n+17 | | 2a+4=-2a-24 | | -2d-6=6d+66 | | 6d-5=d-50 | | -9-3k=6k-54 | | 4w+9=-18+7w | | 1-5n=6n+12 | | -d+7=28+6d | | 7d+5=d+41 |