18+-2(x+7)=((8x-20)/2)-2

Solution for 18+-2(x+7)=((8x-20)/2)-2 equation:

18+-2(x+7)=((8x-20)/2)-2

We move all terms to the left:

18+-2(x+7)-(((8x-20)/2)-2)=0

We add all the numbers together, and all the variables

-2(x+7)-(((8x-20)/2)-2)=0

We multiply parentheses

-2x-(((8x-20)/2)-2)-14=0

We multiply all the terms by the denominator


-2x*2)-2)-(((8x-20)-14*2)-2)=0

We add all the numbers together, and all the variables

-2x*2)-2)-(((8x-20)=0

Wy multiply elements

-4x^2=0

a = -4; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-4)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$x=\frac{-b}{2a}=\frac{0}{-8}=0$