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)
m/(-2) = 6 // - 6
m/(-2)-6 = 0
-1/2*m-6 = 0 // + 6
-1/2*m = 6 // : -1/2
m = 6/(-1/2)
m = -12
m = -12
| t+9=-3 | | -7+d=-19 | | 11.5-r=3 | | 8+w=17 | | a-1=-12 | | -5w=60 | | -3+t=7 | | -9+w=-14 | | c-25=176.88 | | 5=m-2 | | -1=n-1 | | b-8=-3 | | 9+d=21 | | m+62.3=20186.7 | | -9+t=-18 | | b-2=9 | | 2a^2-24a+72=98 | | 20x+x^2=85.9375 | | 2x^2-24a+72=98 | | w+9=4 | | -4+d=-2 | | 2=m-1 | | -4d=-12 | | 1848/21 | | 2.3y=43 | | 5(1-x)-2(x+4)=3-2x | | -1+t=-12 | | a-1=-5 | | 2x-3=4x-3 | | m+2=5 | | -1=a-9 | | -3+m=-10 |