5/6x-1/5x=18

Solution for 5/6x-1/5x=18 equation:

5/6x-1/5x=18

We move all terms to the left:

5/6x-1/5x-(18)=0


Domain of the equation: 6x!=0

x!=0/6

x!=0

x∈R



Domain of the equation: 5x!=0

x!=0/5

x!=0

x∈R


We calculate fractions


25x/30x^2+(-6x)/30x^2-18=0

We multiply all the terms by the denominator


25x+(-6x)-18*30x^2=0

Wy multiply elements

-540x^2+25x+(-6x)=0

We get rid of parentheses

-540x^2+25x-6x=0

We add all the numbers together, and all the variables

-540x^2+19x=0

a = -540; b = 19; c = 0;
Δ = b2-4ac
Δ = 192-4·(-540)·0
Δ = 361
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{361}=19$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(19)-19}{2*-540}=\frac{-38}{-1080}
=19/540
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(19)+19}{2*-540}=\frac{0}{-1080}
=0
$