4x=1/3x+8

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Solution for 4x=1/3x+8 equation:



4x=1/3x+8
We move all terms to the left:
4x-(1/3x+8)=0
Domain of the equation: 3x+8)!=0
x∈R
We get rid of parentheses
4x-1/3x-8=0
We multiply all the terms by the denominator
4x*3x-8*3x-1=0
Wy multiply elements
12x^2-24x-1=0
a = 12; b = -24; c = -1;
Δ = b2-4ac
Δ = -242-4·12·(-1)
Δ = 624
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

The end solution:
$\sqrt{\Delta}=\sqrt{624}=\sqrt{16*39}=\sqrt{16}*\sqrt{39}=4\sqrt{39}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-24)-4\sqrt{39}}{2*12}=\frac{24-4\sqrt{39}}{24} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-24)+4\sqrt{39}}{2*12}=\frac{24+4\sqrt{39}}{24} $

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