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-6 = 7*m-76 // - 7*m-76
76-3*m-(7*m)-6 = 0
76-3*m-7*m-6 = 0
70-10*m = 0 // - 70
-10*m = -70 // : -10
m = -70/(-10)
m = 7
m = 7
| 2n+1=-5n+15 | | -5w+6=7w+78 | | b+5=-15+3b | | -3-2n=5n-87 | | 1+7m=3m+29 | | -3n+5=-7n-11 | | -n-4=56+4n | | -6b-7=6b-139 | | n+5=2n-3 | | 9+4x=-3x+79 | | 9+6m=4m+11 | | t+1=7t+67 | | b+5=29+4b | | 4m+10=-10+6m | | 4a+10=6a+2 | | -n+1=-7n+7 | | 6d+1=67-5d | | k+8=62+7k | | -6w+4=-48+7w | | -2b+3=5b+80 | | -a-1=-7+a | | 1+6n=3n+37 | | -5b+4=-b+20 | | -6b+3=75+3b | | 3x+2=52-2x | | 7n-3=8+6n | | -2k+3=27-5k | | w-2=7w-32 | | -d+7=7d+47 | | -7a+2=5a-22 | | 4-4b=3b+25 | | 2d+7=4d+25 |