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)
(-2*x)/12 = 9/12 // - 9/12
(-2*x)/12-(9/12) = 0
(-2*x)/12-3/4 = 0
-1/6*x-3/4 = 0 // + 3/4
-1/6*x = 3/4 // : -1/6
x = 3/4/(-1/6)
x = -9/2
x = -9/2
| 3r+11+7r= | | A^4-15a^2+56=0 | | 7+7x=-(x+4)+8x-32 | | 3x^4+6x^2-72=0 | | 5x^2+3x-15=80 | | -2p^2-4p+3=0 | | 9(7x-8)+8=10x-3 | | 0.5(2c-4)=0.33(6c-30) | | 19.416x^2-108.672x+125.78=0 | | x*3/4*5/6=18 | | 3+3=3+3+3+3+3+3 | | 19.416x^2+108.672x+125.78=0 | | 98x+56y=15000 | | (x-6)/6=(3x)/8 | | 6+(x+3)=x | | -1.6-4x-2x=5x+4.5 | | h=-16t^2+gt+k | | .2(x+5)+4x-19=2x+7-2(3-x) | | 2(x-3)-3(4-2x)+x= | | 3j=81 | | 5x(3+7)=13 | | 6*n=42 | | 48/=4 | | n*11=88 | | abs(6+2x)=8 | | x^2-4y^2-2x-16y-31=0 | | 44/n=11 | | 4x+15=60 | | 0,60=(10,80-3)/(x*4,56) | | 0.60=(10.80-3)/(x*5.56^2) | | k/-51=65 | | 3x^2-1X=47 |