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)
1.2-(((6/x)/3)/x) = 0
1.2-2*x^-2 = 0
-2*x^-2 = -1.2 // : -2
x^-2 = 0.6
-2 < 0
1/(x^2) = 0.6 // * x^2
1 = 0.6*x^2 // : 0.6
1.66666667 = x^2
x^2 = 1.66666667 // ^ 1/2
abs(x) = 1.66666667^(1/2)
x = 1.66666667^(1/2) or x = -1.66666667^(1/2)
x in { 1.66666667^(1/2), -1.66666667^(1/2) }
| (x-3)(7-2x)=0 | | 6=3x-4 | | 3*(8/5)-4y=0 | | 2x-4(x-4)=-3+4x+7 | | 3*8/5-4y=0 | | 4y=24/5 | | (-11/2)-(5/12)=x | | -8z=67 | | x+3=-x+4 | | 0.5(6x+12)-4x=-3(x+1) | | x^2-30=70 | | b(-a-2b)=1 | | 10+2y=-2 | | 10z=23 | | 2(x-4)+4=8 | | .2x+x=2000 | | 10x^2+5xy= | | 17/3-7/15=x | | 4/7-6/7=x | | 6*(0.5X)=45 | | a^3+3a-1=0 | | 54x-43x=0 | | y=241/5-102/3 | | Y=2.25+2x-3 | | 5*(x-2)-2*(x-5)=2x-(10+3x) | | m+n=2mn | | 4b^2+2b-72=0 | | x+9=-x+5 | | N-0.1n+3.6=-4.7(n+4) | | 4x^2+y^2-2y+4z^2=0 | | 0.5y+5.5=1.7-5.5 | | P=10-1Q |