x=3x-1/2x+5

Solution for x=3x-1/2x+5 equation:

x=3x-1/2x+5

We move all terms to the left:

x-(3x-1/2x+5)=0


Domain of the equation: 2x+5)!=0

x∈R


We get rid of parentheses

x-3x+1/2x-5=0

We multiply all the terms by the denominator


x*2x-3x*2x-5*2x+1=0

Wy multiply elements

2x^2-6x^2-10x+1=0

We add all the numbers together, and all the variables

-4x^2-10x+1=0

a = -4; b = -10; c = +1;
Δ = b2-4ac
Δ = -102-4·(-4)·1
Δ = 116
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:

$\sqrt{\Delta}=\sqrt{116}=\sqrt{4*29}=\sqrt{4}*\sqrt{29}=2\sqrt{29}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(-10)-2\sqrt{29}}{2*-4}=\frac{10-2\sqrt{29}}{-8}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(-10)+2\sqrt{29}}{2*-4}=\frac{10+2\sqrt{29}}{-8}
$