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)
13/7 = 3/x // - 3/x
13/7-(3/x) = 0
13/7-3*x^-1 = 0
-3*x^-1 = -13/7 // : -3
x^-1 = 13/21
-1 < 0
1/(x^1) = 13/21 // * x^1
1 = 13/21*x^1 // : 13/21
21/13 = x^1
x = 21/13
x = 21/13
| 3(x+6)=12x | | 2a^2b^2+ab= | | 10x+8=3(3x+3) | | 11(14)-24= | | 11x-24=7x+32 | | 1=1-7n-6n | | 13(12)-33= | | -5x-12=x | | 13x-33=8x+27 | | 11(13)-41= | | h(-x)=x^4+7x^2-1 | | 4y^2+20y-4=0 | | F:(f/4)-4=1 | | f(-5)=-3x+5 | | (1-v)(4+2v)=0 | | 11x-41= | | F/4-4=-1 | | 5x+37=102 | | 4n-2=19 | | 4x+17=8x+1 | | 11x-41=102 | | 2x-29=x-3 | | 11x-41=5x+37 | | 3n-4n-2=19 | | 9=3(9)+40 | | 3n-4n-2n=19 | | 72=3a | | √x=13/15 | | 68=4a | | 2x-22=x-5 | | -3x^2+9x+24=0 | | -14x+35=-12x+10+3x |