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)
x/3-9 = 12 // - 12
x/3-12-9 = 0
1/3*x-21 = 0 // + 21
1/3*x = 21 // : 1/3
x = 21/1/3
x = 63
x = 63
| 5x+10=10840 | | 11m+4=48 | | 5x+10=15845 | | 0.001-0.8x=0.04-x | | 0.01-0.8x=0.4-x | | 40-x=0.5x+10 | | 3x+13x= | | 2x-5=-8x+10 | | -9x+3=18 | | 4.4=-10+x | | 6x+13x=144 | | 9-7y^2=57 | | 20x-15=2(x+6) | | 1800+(x-1)*120=2500+(x-1)*100 | | 1800+(x-1)*120=1800+(x-1)*120 | | f(x)=3x^2+22x-16 | | 5-3y=-13 | | x/7-4=9/14 | | 2500+(x-1)*100=1800+(x-1)*120 | | 15-1.5b+3-2b-9=b | | 5x-(4-x)=6x | | (2x/3)+(x/4)+2=x | | 4x-8-2x+12=6(x-3) | | 6(x-9)=6x-5 | | -(y-4)=y-y | | -3x^3+3x^2+6x=0 | | c=5/9-32 | | 3(-7-4x)=-12x-3 | | -8x^2-24x-10=0 | | 3x/2+1/4x-1/2=10 | | 1/3(6x-21)=17 | | 4x^3-14x^2-44x=0 |