1/5x-5=1/4x

Solution for 1/5x-5=1/4x equation:

1/5x-5=1/4x

We move all terms to the left:

1/5x-5-(1/4x)=0


Domain of the equation: 5x!=0

x!=0/5

x!=0

x∈R



Domain of the equation: 4x)!=0

x!=0/1

x!=0

x∈R


We add all the numbers together, and all the variables

1/5x-(+1/4x)-5=0

We get rid of parentheses

1/5x-1/4x-5=0

We calculate fractions


4x/20x^2+(-5x)/20x^2-5=0

We multiply all the terms by the denominator


4x+(-5x)-5*20x^2=0

Wy multiply elements

-100x^2+4x+(-5x)=0

We get rid of parentheses

-100x^2+4x-5x=0

We add all the numbers together, and all the variables

-100x^2-1x=0

a = -100; b = -1; c = 0;
Δ = b2-4ac
Δ = -12-4·(-100)·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*-100}=\frac{0}{-200}
=0
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1)+1}{2*-100}=\frac{2}{-200}
=-1/100
$