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)
8 = k/(-4)-12 // - k/(-4)-12
8-(k/(-4))+12 = 0
1/4*k+20 = 0 // - 20
1/4*k = -20 // : 1/4
k = -20/1/4
k = -80
k = -80
| sqrt(x^2-25)=4 | | -4=7x+1/(-8) | | (-4k^4+14*3k^2)+(-3k^4-14k^2-8)= | | 8/5x-8=4/3 | | -3x+y=-23 | | y=7/8x+10 | | .16y+.02(y+2000)=1660 | | Y=-16x^2+22x+3 | | 4/(m-8)=8/2 | | F(x)=-16x^2+22x+3 | | (3/X+20)-(4/X-20)=4X/X^2-400 | | 2(6)-3y=9 | | 1/2s+4=6 | | (4r^3+3r^3)-(r^4-5r^3)= | | 5/3-1x/6=3x+5/4 | | 23.4-4.6-17.9= | | -5/7=c | | -5/1=x | | -3--4=x | | -7--2=x | | 3/2x+1/3=2x-3/4 | | 4x*4y=3 | | tc=580+15q | | 120x^4-9x^5-3x^6=0 | | 4(y-7)=2y-3 | | 16(x+2)-8=16x+4 | | 1/2x-12x=220 | | 25+2y-9=11y-14-4y | | 6/3(2+1)= | | n-7=5n-1 | | 5/3-1/6x=3x+5/4 | | 3x(4x+1)=-x(5-x) |