2x-5/x=7

Solution for 2x-5/x=7 equation:

2x-5/x=7

We move all terms to the left:

2x-5/x-(7)=0


Domain of the equation: x!=0

x∈R


We multiply all the terms by the denominator


2x*x-7*x-5=0

We add all the numbers together, and all the variables

-7x+2x*x-5=0

Wy multiply elements

2x^2-7x-5=0

a = 2; b = -7; c = -5;
Δ = b2-4ac
Δ = -72-4·2·(-5)
Δ = 89
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-7)-\sqrt{89}}{2*2}=\frac{7-\sqrt{89}}{4}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-7)+\sqrt{89}}{2*2}=\frac{7+\sqrt{89}}{4}
$