-2/3x=5+x

Solution for -2/3x=5+x equation:

-2/3x=5+x

We move all terms to the left:

-2/3x-(5+x)=0


Domain of the equation: 3x!=0

x!=0/3

x!=0

x∈R


We add all the numbers together, and all the variables

-2/3x-(x+5)=0

We get rid of parentheses

-2/3x-x-5=0

We multiply all the terms by the denominator


-x*3x-5*3x-2=0

Wy multiply elements

-3x^2-15x-2=0

a = -3; b = -15; c = -2;
Δ = b2-4ac
Δ = -152-4·(-3)·(-2)
Δ = 201
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-15)-\sqrt{201}}{2*-3}=\frac{15-\sqrt{201}}{-6}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-15)+\sqrt{201}}{2*-3}=\frac{15+\sqrt{201}}{-6}
$