3x+9/3-4x/x-3=x

Solution for 3x+9/3-4x/x-3=x equation:

3x+9/3-4x/x-3=x

We move all terms to the left:

3x+9/3-4x/x-3-(x)=0


Domain of the equation: x!=0

x∈R


We add all the numbers together, and all the variables

2x-4x/x=0

We multiply all the terms by the denominator


2x*x-4x=0

We add all the numbers together, and all the variables

-4x+2x*x=0

Wy multiply elements

2x^2-4x=0

a = 2; b = -4; c = 0;
Δ = b2-4ac
Δ = -42-4·2·0
Δ = 16
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{16}=4$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-4)-4}{2*2}=\frac{0}{4}
=0
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-4)+4}{2*2}=\frac{8}{4}
=2
$