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+6 = 78 // - 78
6*m-78+6 = 0
6*m-72 = 0 // + 72
6*m = 72 // : 6
m = 72/6
m = 12
m = 12
| 5w-3=42 | | 1+5w=11 | | 4m-6=-26 | | 1+6b=-23 | | -5-6n=-5 | | -6w-2=40 | | 2a-4=-12 | | 3+6k=69 | | 7d-3=81 | | 4(x+3)+4=32 | | -7d+4=-80 | | 7b-10=25 | | 7d+3=52 | | -8+6m=28 | | 6k+4=-14 | | -7t+9=58 | | 6t+9=-45 | | 10+7d=80 | | -3k-6=-15 | | 1+6d=19 | | 5d+10=65 | | 6b+5=41 | | 3m+4=34 | | 6+7b=-8 | | 7w+5=61 | | 6d-4=62 | | 2g+h=4j | | 5-3m=35 | | 7n+10=-46 | | -6n+4=16 | | -3n+8=17 | | 2a+1=17 |