a-12=(2a+20)/6

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Solution for a-12=(2a+20)/6 equation: 



a-12=(2a+20)/6

We move all terms to the left:

a-12-((2a+20)/6)=0

We multiply all the terms by the denominator


a*6)-((2a+20)-12*6)=0

We add all the numbers together, and all the variables

a*6)-((2a+20)=0

Wy multiply elements

6a^2=0

a = 6; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·6·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$a=\frac{-b}{2a}=\frac{0}{12}=0$

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