5/6x-3-1/2x=-9

Solution for 5/6x-3-1/2x=-9 equation:

5/6x-3-1/2x=-9

We move all terms to the left:

5/6x-3-1/2x-(-9)=0


Domain of the equation: 6x!=0

x!=0/6

x!=0

x∈R



Domain of the equation: 2x!=0

x!=0/2

x!=0

x∈R


We add all the numbers together, and all the variables

5/6x-1/2x+6=0

We calculate fractions


10x/12x^2+(-6x)/12x^2+6=0

We multiply all the terms by the denominator


10x+(-6x)+6*12x^2=0

Wy multiply elements

72x^2+10x+(-6x)=0

We get rid of parentheses

72x^2+10x-6x=0

We add all the numbers together, and all the variables

72x^2+4x=0

a = 72; b = 4; c = 0;
Δ = b2-4ac
Δ = 42-4·72·0
Δ = 16
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{16}=4$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(4)-4}{2*72}=\frac{-8}{144}
=-1/18
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(4)+4}{2*72}=\frac{0}{144}
=0
$