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9y+4=5((9y+4)/5)
We move all terms to the left:
9y+4-(5((9y+4)/5))=0
We multiply all the terms by the denominator
9y*5))-(5((9y+4)+4*5))=0
We add all the numbers together, and all the variables
9y*5))-(5((9y+4)=0
Wy multiply elements
45y^2=0
a = 45; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·45·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$y=\frac{-b}{2a}=\frac{0}{90}=0$
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