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)
4.7 = 12/x // - 12/x
4.7-(12/x) = 0
4.7-12*x^-1 = 0
-12*x^-1 = -4.7 // : -12
x^-1 = 0.39166667
-1 < 0
1/(x^1) = 0.39166667 // * x^1
1 = 0.39166667*x^1 // : 0.39166667
2.55319147 = x^1
x = 2.55319147
x = 2.55319147
| (5x+20)+(3x+76)+(x+196)=180 | | 5y+6-(-3+4y)=10 | | x-5^2-x-3^5=1/2 | | 2(2x+3x)=x-(3x+10) | | 6(2q+2)-6=8 | | 6x+3-2x=-5 | | 5k+5k=8k+14 | | -8+7v=-8-2v | | -3(-6x-7)-3x=141 | | Y^3-1.75y^2+0.53=0 | | 412=4+8(-8n-5) | | x^2-8.75=0 | | 3(6x-6)=7(2x-2) | | 164=4(6n-1) | | 3v+15=21 | | 7(8-5r)+2r=287 | | 9(3c-6)-7c= | | -18-9x=x+32 | | 3x^2+2y^2=18 | | -6(n-8)=84 | | -4(x-9)=12 | | j-b=x | | X+1(3)=4 | | x-(4x+2)=7+(2x+6) | | 7(2x+5)=12x+25 | | -4x(-3-2)=7 | | -(5x-9)=-10x-(-1) | | 3(3-4)=4 | | y=28x-12a | | 4-(-7x)+3=-2x | | 4-3x-1=18 | | 2x+2=3+4x |