2/3x-2x=8

Solution for 2/3x-2x=8 equation:

2/3x-2x=8

We move all terms to the left:

2/3x-2x-(8)=0


Domain of the equation: 3x!=0

x!=0/3

x!=0

x∈R


We add all the numbers together, and all the variables

-2x+2/3x-8=0

We multiply all the terms by the denominator


-2x*3x-8*3x+2=0

Wy multiply elements

-6x^2-24x+2=0

a = -6; b = -24; c = +2;
Δ = b2-4ac
Δ = -242-4·(-6)·2
Δ = 624
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:

$\sqrt{\Delta}=\sqrt{624}=\sqrt{16*39}=\sqrt{16}*\sqrt{39}=4\sqrt{39}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-24)-4\sqrt{39}}{2*-6}=\frac{24-4\sqrt{39}}{-12}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-24)+4\sqrt{39}}{2*-6}=\frac{24+4\sqrt{39}}{-12}
$