((X-21)/2)=4x

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Solution for ((X-21)/2)=4x equation: 



((X-21)/2)=4X

We move all terms to the left:

((X-21)/2)-(4X)=0

We add all the numbers together, and all the variables

-4X+((X-21)/2)=0

We multiply all the terms by the denominator


-4X*2)+((X-21)=0

Wy multiply elements

-8X^2=0

a = -8; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·(-8)·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$X=\frac{-b}{2a}=\frac{0}{-16}=0$

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