X+18=1/2x+36

Solution for X+18=1/2x+36 equation:

X+18=1/2X+36

We move all terms to the left:

X+18-(1/2X+36)=0


Domain of the equation: 2X+36)!=0

X∈R


We get rid of parentheses

X-1/2X-36+18=0

We multiply all the terms by the denominator


X*2X-36*2X+18*2X-1=0

Wy multiply elements

2X^2-72X+36X-1=0

We add all the numbers together, and all the variables

2X^2-36X-1=0

a = 2; b = -36; c = -1;
Δ = b2-4ac
Δ = -362-4·2·(-1)
Δ = 1304
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:

$\sqrt{\Delta}=\sqrt{1304}=\sqrt{4*326}=\sqrt{4}*\sqrt{326}=2\sqrt{326}$
$X_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-36)-2\sqrt{326}}{2*2}=\frac{36-2\sqrt{326}}{4}
$
$X_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-36)+2\sqrt{326}}{2*2}=\frac{36+2\sqrt{326}}{4}
$