1/2x+20=1/3x+30

Solution for 1/2x+20=1/3x+30 equation:

1/2x+20=1/3x+30

We move all terms to the left:

1/2x+20-(1/3x+30)=0


Domain of the equation: 2x!=0

x!=0/2

x!=0

x∈R



Domain of the equation: 3x+30)!=0

x∈R


We get rid of parentheses

1/2x-1/3x-30+20=0

We calculate fractions


3x/6x^2+(-2x)/6x^2-30+20=0

We add all the numbers together, and all the variables

3x/6x^2+(-2x)/6x^2-10=0

We multiply all the terms by the denominator


3x+(-2x)-10*6x^2=0

Wy multiply elements

-60x^2+3x+(-2x)=0

We get rid of parentheses

-60x^2+3x-2x=0

We add all the numbers together, and all the variables

-60x^2+x=0

a = -60; b = 1; c = 0;
Δ = b2-4ac
Δ = 12-4·(-60)·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*-60}=\frac{-2}{-120}
=1/60
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+1}{2*-60}=\frac{0}{-120}
=0
$