1/3x-2=2/9x+4

Solution for 1/3x-2=2/9x+4 equation:

1/3x-2=2/9x+4

We move all terms to the left:

1/3x-2-(2/9x+4)=0


Domain of the equation: 3x!=0

x!=0/3

x!=0

x∈R



Domain of the equation: 9x+4)!=0

x∈R


We get rid of parentheses

1/3x-2/9x-4-2=0

We calculate fractions


9x/27x^2+(-6x)/27x^2-4-2=0

We add all the numbers together, and all the variables

9x/27x^2+(-6x)/27x^2-6=0

We multiply all the terms by the denominator


9x+(-6x)-6*27x^2=0

Wy multiply elements

-162x^2+9x+(-6x)=0

We get rid of parentheses

-162x^2+9x-6x=0

We add all the numbers together, and all the variables

-162x^2+3x=0

a = -162; b = 3; c = 0;
Δ = b2-4ac
Δ = 32-4·(-162)·0
Δ = 9
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{9}=3$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(3)-3}{2*-162}=\frac{-6}{-324}
=1/54
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(3)+3}{2*-162}=\frac{0}{-324}
=0
$