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

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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)=0
We multiply parentheses
-2x-((8x-20)/2)-14=0
We multiply all the terms by the denominator
-2x*2)-((8x-20)-14*2)=0
We add all the numbers together, and all the variables
-2x*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:
$x=\frac{-b}{2a}=\frac{0}{-8}=0$

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