2/3x-1/6x=75

Solution for 2/3x-1/6x=75 equation:

2/3x-1/6x=75

We move all terms to the left:

2/3x-1/6x-(75)=0


Domain of the equation: 3x!=0

x!=0/3

x!=0

x∈R



Domain of the equation: 6x!=0

x!=0/6

x!=0

x∈R


We calculate fractions


12x/18x^2+(-3x)/18x^2-75=0

We multiply all the terms by the denominator


12x+(-3x)-75*18x^2=0

Wy multiply elements

-1350x^2+12x+(-3x)=0

We get rid of parentheses

-1350x^2+12x-3x=0

We add all the numbers together, and all the variables

-1350x^2+9x=0

a = -1350; b = 9; c = 0;
Δ = b2-4ac
Δ = 92-4·(-1350)·0
Δ = 81
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{81}=9$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(9)-9}{2*-1350}=\frac{-18}{-2700}
=1/150
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(9)+9}{2*-1350}=\frac{0}{-2700}
=0
$