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/2-4 = 12 // - 12
k/2-12-4 = 0
1/2*k-16 = 0 // + 16
1/2*k = 16 // : 1/2
k = 16/1/2
k = 32
k = 32
| x=-36+4y | | 5x-3y=-27 | | 0.75b+5=14 | | K^2=0 | | -13+5n=56 | | Y=100+0.66(Y-200)+300+200 | | -6x^2=-414 | | y^3-3y-42=0 | | -6x^2=-144 | | 10y=6y+16 | | y^3-3y-110=0 | | 14x+39y=c | | g=6.4 | | x^2+7=27 | | x(x-2)=2(x+18) | | 18x+8x^2+4y=8x^2-12 | | 7(5x+5)= | | x+30=5 | | x-12=(-24) | | 6[8(16-5)+2(4+12)]= | | 5(6x+10)=380 | | 6[8(6-5)+2(4+9)]= | | 6[8(6-5)+2(4+-9)]= | | x/3+9=12 | | 2(7+7x)=84 | | -x+8=-9x-24 | | v^2-4v-96=0 | | 45x=225 | | 5(6x+1)=65 | | Y=100+0.6(Y-200)+250+200 | | 41/2/31/4 | | 3+192x^3= |