If it's not what You are looking for type in the equation solver your own equation and let us solve it.
k in (-oo:+oo)
k/2 = -6 // + 6
k/2+6 = 0
1/2*k+6 = 0 // - 6
1/2*k = -6 // : 1/2
k = -6/1/2
k = -12
k = -12
| 1.25y=y+3+1 | | m+10=22 | | 12=w+10 | | b+8=20 | | w/-5=-2 | | 6m+2m+m= | | 10=b+4 | | 2=a-3 | | -6k=-54 | | 7=m+1 | | -5a=0 | | -3t=-27 | | 4x^2+20x+25=-7 | | d+2=0 | | -2+d=-9 | | b+1=10 | | -6m=0 | | 5m=-25 | | 9+d=12 | | (3x-2)*5=(x+4)*2 | | 6+w=14 | | k/5=7 | | 17=m+9 | | n-9=-19 | | 1.15x+0.40(200-x)=1.25x | | -18=t-8 | | 7+a=4 | | k+9=10 | | 1=w-8 | | -16n=-64 | | 18=a+7 | | b+1=11 |