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

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

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

We move all terms to the left:

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


Domain of the equation: 2x!=0

x!=0/2

x!=0

x∈R



Domain of the equation: 3x!=0

x!=0/3

x!=0

x∈R


We add all the numbers together, and all the variables

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

We get rid of parentheses

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

We calculate fractions


(-18x^2)/96x^2+48x/96x^2+32x/96x^2=0

We multiply all the terms by the denominator


(-18x^2)+48x+32x=0

We add all the numbers together, and all the variables

(-18x^2)+80x=0

We get rid of parentheses

-18x^2+80x=0

a = -18; b = 80; c = 0;
Δ = b2-4ac
Δ = 802-4·(-18)·0
Δ = 6400
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{6400}=80$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(80)-80}{2*-18}=\frac{-160}{-36}
=4+4/9
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(80)+80}{2*-18}=\frac{0}{-36}
=0
$