-8/3x-8=-8/5x-2

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Solution for -8/3x-8=-8/5x-2 equation:



-8/3x-8=-8/5x-2
We move all terms to the left:
-8/3x-8-(-8/5x-2)=0
Domain of the equation: 3x!=0
x!=0/3
x!=0
x∈R
Domain of the equation: 5x-2)!=0
x∈R
We get rid of parentheses
-8/3x+8/5x+2-8=0
We calculate fractions
(-40x)/15x^2+24x/15x^2+2-8=0
We add all the numbers together, and all the variables
(-40x)/15x^2+24x/15x^2-6=0
We multiply all the terms by the denominator
(-40x)+24x-6*15x^2=0
We add all the numbers together, and all the variables
24x+(-40x)-6*15x^2=0
Wy multiply elements
-90x^2+24x+(-40x)=0
We get rid of parentheses
-90x^2+24x-40x=0
We add all the numbers together, and all the variables
-90x^2-16x=0
a = -90; b = -16; c = 0;
Δ = b2-4ac
Δ = -162-4·(-90)·0
Δ = 256
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{256}=16$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-16)-16}{2*-90}=\frac{0}{-180} =0 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-16)+16}{2*-90}=\frac{32}{-180} =-8/45 $

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