9/x=7/3x-2

Solution for 9/x=7/3x-2 equation:

9/x=7/3x-2

We move all terms to the left:

9/x-(7/3x-2)=0


Domain of the equation: x!=0

x∈R



Domain of the equation: 3x-2)!=0

x∈R


We get rid of parentheses

9/x-7/3x+2=0

We calculate fractions


27x/3x^2+(-7x)/3x^2+2=0

We multiply all the terms by the denominator


27x+(-7x)+2*3x^2=0

Wy multiply elements

6x^2+27x+(-7x)=0

We get rid of parentheses

6x^2+27x-7x=0

We add all the numbers together, and all the variables

6x^2+20x=0

a = 6; b = 20; c = 0;
Δ = b2-4ac
Δ = 202-4·6·0
Δ = 400
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{400}=20$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(20)-20}{2*6}=\frac{-40}{12}
=-3+1/3
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(20)+20}{2*6}=\frac{0}{12}
=0
$