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)
27/x = 3 // - 3
27/x-3 = 0
27*x^-1 = 3 // : 27
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
| K^2=225 | | w/4=4 | | 10(S-5)=-85 | | ((Y^2)/(2*x*y))=2 | | 3-144=d | | 5(2x-6)-3=5(x-2)+12 | | 3x-3y=-10 | | (x^4-7x^2+3x)-(9x^3+x^2-7x+2)= | | -18x+-x-4x+16x=-7 | | X^2+Y^2*-18y+80=0 | | x^2+2x-13=3 | | X*x*x=81 | | 0.25x+3=0.75 | | 7y-3=12y+37 | | Y/2-10=-6 | | 2x=1515 | | (-3)-3y=-33 | | 0.02x+0.05=0.4 | | 3x=1515 | | X^2+Y^2-18y+80=0 | | 6x-(4x+4)=8 | | 10x=1515 | | 1x=1515 | | 3(2x-2)+2x=4x-3+2x | | 3x+2+2x=2x+4-2 | | 7x-2=5x+26 | | 5x=1515 | | (3p+2)(5p-1)= | | 2a+37=180 | | 2(4S+2)=68 | | 4,000=x/-40 | | 3x*6y=693 |