(1/2)x-6+8x+7-x=0

Solution for (1/2)x-6+8x+7-x=0 equation:

(1/2)x-6+8x+7-x=0


Domain of the equation: 2)x!=0

x!=0/1

x!=0

x∈R


We add all the numbers together, and all the variables

(+1/2)x+8x-x-6+7=0

We add all the numbers together, and all the variables

7x+(+1/2)x+1=0

We multiply parentheses

x^2+7x+1=0

a = 1; b = 7; c = +1;
Δ = b2-4ac
Δ = 72-4·1·1
Δ = 45
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:

$\sqrt{\Delta}=\sqrt{45}=\sqrt{9*5}=\sqrt{9}*\sqrt{5}=3\sqrt{5}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(7)-3\sqrt{5}}{2*1}=\frac{-7-3\sqrt{5}}{2}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(7)+3\sqrt{5}}{2*1}=\frac{-7+3\sqrt{5}}{2}
$