9y=(7-3y)/7

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Solution for 9y=(7-3y)/7 equation: 



9y=(7-3y)/7

We move all terms to the left:

9y-((7-3y)/7)=0

We add all the numbers together, and all the variables

9y-((-3y+7)/7)=0

We multiply all the terms by the denominator


9y*7)-((-3y+7)=0

Wy multiply elements

63y^2=0

a = 63; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·63·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation

                              Stosujemy wzór:
$y=\frac{-b}{2a}=\frac{0}{126}=0$

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