x+7/3x=360

Solution for x+7/3x=360 equation:

x+7/3x=360

We move all terms to the left:

x+7/3x-(360)=0


Domain of the equation: 3x!=0

x!=0/3

x!=0

x∈R


We multiply all the terms by the denominator


x*3x-360*3x+7=0

Wy multiply elements

3x^2-1080x+7=0

a = 3; b = -1080; c = +7;
Δ = b2-4ac
Δ = -10802-4·3·7
Δ = 1166316
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:

$\sqrt{\Delta}=\sqrt{1166316}=\sqrt{4*291579}=\sqrt{4}*\sqrt{291579}=2\sqrt{291579}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-1080)-2\sqrt{291579}}{2*3}=\frac{1080-2\sqrt{291579}}{6}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-1080)+2\sqrt{291579}}{2*3}=\frac{1080+2\sqrt{291579}}{6}
$