1-(x-1)-x=1/2x-1

Solution for 1-(x-1)-x=1/2x-1 equation:

1-(x-1)-x=1/2x-1

We move all terms to the left:

1-(x-1)-x-(1/2x-1)=0


Domain of the equation: 2x-1)!=0

x∈R


We add all the numbers together, and all the variables

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

We get rid of parentheses

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

We multiply all the terms by the denominator


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

Wy multiply elements

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

We add all the numbers together, and all the variables

-4x^2+6x-1=0

a = -4; b = 6; c = -1;
Δ = b2-4ac
Δ = 62-4·(-4)·(-1)
Δ = 20
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:

$\sqrt{\Delta}=\sqrt{20}=\sqrt{4*5}=\sqrt{4}*\sqrt{5}=2\sqrt{5}$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(6)-2\sqrt{5}}{2*-4}=\frac{-6-2\sqrt{5}}{-8}
$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(6)+2\sqrt{5}}{2*-4}=\frac{-6+2\sqrt{5}}{-8}
$