90/x-2+3=x

Solution for 90/x-2+3=x equation:

90/x-2+3=x

We move all terms to the left:

90/x-2+3-(x)=0


Domain of the equation: x!=0

x∈R


We add all the numbers together, and all the variables

-1x+90/x+1=0

We multiply all the terms by the denominator


-1x*x+1*x+90=0

We add all the numbers together, and all the variables

x-1x*x+90=0

Wy multiply elements

-1x^2+x+90=0

a = -1; b = 1; c = +90;
Δ = b2-4ac
Δ = 12-4·(-1)·90
Δ = 361
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{361}=19$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(1)-19}{2*-1}=\frac{-20}{-2}
=+10
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(1)+19}{2*-1}=\frac{18}{-2}
=-9
$