If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
3/x = 4/12 // - 4/12
3/x-(4/12) = 0
3/x-1/3 = 0
3*x^-1 = 1/3 // : 3
x^-1 = 1/9
-1 < 0
1/(x^1) = 1/9 // * x^1
1 = 1/9*x^1 // : 1/9
9 = x^1
x = 9
x = 9
| 4.75a+2.9=20 | | 4y+10x(3y-27)=120 | | 2b+0.81=18 | | 250000+9050= | | 1-1/8z=z-3/4 | | 2x^2y^4*4x^2y^4*3x/3x^-3y^2 | | 6+6(x+4)15y+x= | | (3x)+(3x+15)=95 | | 33=18-x | | 6-2(3x-1)=20 | | 2(x+1)=7--2 | | -2x+5y-x-3y= | | n+5=3n-3 | | 4n+3=17-3n | | 2w+13=-2w-15 | | -3.6(0.25-x)=0.18 | | 3q+2*(1-q)=2q+5(1-q) | | 2(x+1)=7-2 | | 11+6y=41 | | 3n-7=-22 | | -10+5p=6p | | 37-3r=4 | | (4u+7)(5+u)=0 | | 0=6z+27 | | -20-20c=-3c+8-19c | | 4x-3(-2)=9 | | 5x-12=10x-(5x+1) | | -6=b/-18 | | x-2.3=7.2 | | 2[a-(2-3a)-4]=a-5 | | -5-g=-9+3g | | 7+5p-p=11p |