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

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

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

We move all terms to the left:

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


Domain of the equation: 3x!=0

x!=0/3

x!=0

x∈R



Domain of the equation: 2x+4)!=0

x∈R


We get rid of parentheses

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

We calculate fractions


4x/6x^2+3x/6x^2-4-9=0

We add all the numbers together, and all the variables

4x/6x^2+3x/6x^2-13=0

We multiply all the terms by the denominator


4x+3x-13*6x^2=0

We add all the numbers together, and all the variables

7x-13*6x^2=0

Wy multiply elements

-78x^2+7x=0

a = -78; b = 7; c = 0;
Δ = b2-4ac
Δ = 72-4·(-78)·0
Δ = 49
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{49}=7$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-7}{2*-78}=\frac{-14}{-156}
=7/78
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+7}{2*-78}=\frac{0}{-156}
=0
$