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15x=(4500x-75x)/60
We move all terms to the left:
15x-((4500x-75x)/60)=0
We add all the numbers together, and all the variables
15x-((+4425x)/60)=0
We multiply all the terms by the denominator
15x*60)-((+4425x)=0
Wy multiply elements
900x^2=0
a = 900; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·900·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$x=\frac{-b}{2a}=\frac{0}{1800}=0$
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