3n+7=(n-1)/2

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Solution for 3n+7=(n-1)/2 equation: 



3n+7=(n-1)/2

We move all terms to the left:

3n+7-((n-1)/2)=0

We multiply all the terms by the denominator


3n*2)-((n-1)+7*2)=0

We add all the numbers together, and all the variables

3n*2)-((n-1)=0

Wy multiply elements

6n^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:
$n=\frac{-b}{2a}=\frac{0}{12}=0$

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