12+2/3x=5+3/5x

Solution for 12+2/3x=5+3/5x equation:

12+2/3x=5+3/5x

We move all terms to the left:

12+2/3x-(5+3/5x)=0


Domain of the equation: 3x!=0

x!=0/3

x!=0

x∈R



Domain of the equation: 5x)!=0

x!=0/1

x!=0

x∈R


We add all the numbers together, and all the variables

2/3x-(3/5x+5)+12=0

We get rid of parentheses

2/3x-3/5x-5+12=0

We calculate fractions


10x/15x^2+(-9x)/15x^2-5+12=0

We add all the numbers together, and all the variables

10x/15x^2+(-9x)/15x^2+7=0

We multiply all the terms by the denominator


10x+(-9x)+7*15x^2=0

Wy multiply elements

105x^2+10x+(-9x)=0

We get rid of parentheses

105x^2+10x-9x=0

We add all the numbers together, and all the variables

105x^2+x=0

a = 105; b = 1; c = 0;
Δ = b2-4ac
Δ = 12-4·105·0
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*105}=\frac{-2}{210}
=-1/105
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+1}{2*105}=\frac{0}{210}
=0
$