x=41/39x+4

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Solution for x=41/39x+4 equation:



x=41/39x+4
We move all terms to the left:
x-(41/39x+4)=0
Domain of the equation: 39x+4)!=0
x∈R
We get rid of parentheses
x-41/39x-4=0
We multiply all the terms by the denominator
x*39x-4*39x-41=0
Wy multiply elements
39x^2-156x-41=0
a = 39; b = -156; c = -41;
Δ = b2-4ac
Δ = -1562-4·39·(-41)
Δ = 30732
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:
$\sqrt{\Delta}=\sqrt{30732}=\sqrt{4*7683}=\sqrt{4}*\sqrt{7683}=2\sqrt{7683}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-156)-2\sqrt{7683}}{2*39}=\frac{156-2\sqrt{7683}}{78} $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-156)+2\sqrt{7683}}{2*39}=\frac{156+2\sqrt{7683}}{78} $

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