If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
3-(x/2) = -12 // + 12
3-(x/2)+12 = 0
15-1/2*x = 0 // - 15
-1/2*x = -15 // : -1/2
x = -15/(-1/2)
x = 30
x = 30
| (1-z)(-5)= | | 16x^2-2=2 | | (D+3)+-3= | | 2x+3y+z=4 | | n+21=4 | | 9m^2-2=142 | | 4x-2y-3z=15 | | 5(3p-8)+6p=8p-14 | | -2*[x-9]=28 | | 4tan^2x+2tanx-3=0 | | 36v^2+5=54 | | X^3k+y^6k=0 | | 3y+27=-6x | | 5x+2y+2z=20 | | 4(x-2)2x=40 | | -2(-5r)= | | 9n+4=2n-3 | | 7x+14-5=-8 | | 0.8x-4=5x | | 17+v=33 | | 5n^2-9=36 | | (5e-5)*5x=20 | | 16y^12-250=0 | | (-5x-16)/-9=-3 | | 8+3x=100 | | 4a^2+8=24 | | (Y+-3)+-3= | | 120x+4x^3=0 | | 5x+8y=5y | | 2x+5+90+x=180 | | 100b^2+8=57 | | 5xdy/dx |