-5/6x-7/9x=-102

Solution for -5/6x-7/9x=-102 equation:

-5/6x-7/9x=-102

We move all terms to the left:

-5/6x-7/9x-(-102)=0


Domain of the equation: 6x!=0

x!=0/6

x!=0

x∈R



Domain of the equation: 9x!=0

x!=0/9

x!=0

x∈R


We add all the numbers together, and all the variables

-5/6x-7/9x+102=0

We calculate fractions


(-45x)/54x^2+(-42x)/54x^2+102=0

We multiply all the terms by the denominator


(-45x)+(-42x)+102*54x^2=0

Wy multiply elements

5508x^2+(-45x)+(-42x)=0

We get rid of parentheses

5508x^2-45x-42x=0

We add all the numbers together, and all the variables

5508x^2-87x=0

a = 5508; b = -87; c = 0;
Δ = b2-4ac
Δ = -872-4·5508·0
Δ = 7569
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{7569}=87$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-87)-87}{2*5508}=\frac{0}{11016}
=0
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-87)+87}{2*5508}=\frac{174}{11016}
=29/1836
$