12+1/2x=15+2/3x

Solution for 12+1/2x=15+2/3x equation:

12+1/2x=15+2/3x

We move all terms to the left:

12+1/2x-(15+2/3x)=0


Domain of the equation: 2x!=0

x!=0/2

x!=0

x∈R



Domain of the equation: 3x)!=0

x!=0/1

x!=0

x∈R


We add all the numbers together, and all the variables

1/2x-(2/3x+15)+12=0

We get rid of parentheses

1/2x-2/3x-15+12=0

We calculate fractions


3x/6x^2+(-4x)/6x^2-15+12=0

We add all the numbers together, and all the variables

3x/6x^2+(-4x)/6x^2-3=0

We multiply all the terms by the denominator


3x+(-4x)-3*6x^2=0

Wy multiply elements

-18x^2+3x+(-4x)=0

We get rid of parentheses

-18x^2+3x-4x=0

We add all the numbers together, and all the variables

-18x^2-1x=0

a = -18; b = -1; c = 0;
Δ = b2-4ac
Δ = -12-4·(-18)·0
Δ = 1
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

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