x+1/2x+(x+45)=180

Solution for x+1/2x+(x+45)=180 equation:

x+1/2x+(x+45)=180

We move all terms to the left:

x+1/2x+(x+45)-(180)=0


Domain of the equation: 2x!=0

x!=0/2

x!=0

x∈R


We get rid of parentheses

x+1/2x+x+45-180=0

We multiply all the terms by the denominator


x*2x+x*2x+45*2x-180*2x+1=0

Wy multiply elements

2x^2+2x^2+90x-360x+1=0

We add all the numbers together, and all the variables

4x^2-270x+1=0

a = 4; b = -270; c = +1;
Δ = b2-4ac
Δ = -2702-4·4·1
Δ = 72884
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:

$\sqrt{\Delta}=\sqrt{72884}=\sqrt{4*18221}=\sqrt{4}*\sqrt{18221}=2\sqrt{18221}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-270)-2\sqrt{18221}}{2*4}=\frac{270-2\sqrt{18221}}{8}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-270)+2\sqrt{18221}}{2*4}=\frac{270+2\sqrt{18221}}{8}
$