8/x-3/2x=12

Solution for 8/x-3/2x=12 equation:

8/x-3/2x=12

We move all terms to the left:

8/x-3/2x-(12)=0


Domain of the equation: x!=0

x∈R



Domain of the equation: 2x!=0

x!=0/2

x!=0

x∈R


We calculate fractions


16x/2x^2+(-3x)/2x^2-12=0

We multiply all the terms by the denominator


16x+(-3x)-12*2x^2=0

Wy multiply elements

-24x^2+16x+(-3x)=0

We get rid of parentheses

-24x^2+16x-3x=0

We add all the numbers together, and all the variables

-24x^2+13x=0

a = -24; b = 13; c = 0;
Δ = b2-4ac
Δ = 132-4·(-24)·0
Δ = 169
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{169}=13$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(13)-13}{2*-24}=\frac{-26}{-48}
=13/24
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(13)+13}{2*-24}=\frac{0}{-48}
=0
$