2x+3=9(1/3x+1)

Solution for 2x+3=9(1/3x+1) equation:

2x+3=9(1/3x+1)

We move all terms to the left:

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


Domain of the equation: 3x+1))!=0

x∈R


We multiply all the terms by the denominator


2x*3x+3*3x+1))-(9(1+1))=0

We add all the numbers together, and all the variables

2x*3x+3*3x+1))-(92)=0

We add all the numbers together, and all the variables

2x*3x+3*3x=0

Wy multiply elements

6x^2+9x=0

a = 6; b = 9; c = 0;
Δ = b2-4ac
Δ = 92-4·6·0
Δ = 81
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{81}=9$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(9)-9}{2*6}=\frac{-18}{12}
=-1+1/2
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(9)+9}{2*6}=\frac{0}{12}
=0
$