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X=180-((30+(2X-30))/2)
We move all terms to the left:
X-(180-((30+(2X-30))/2))=0
We multiply all the terms by the denominator
X*2))-(180-((30+(2X-30))=0
Wy multiply elements
2X^2=0
a = 2; b = 0; c = 0;
Δ = b2-4ac
Δ = 02-4·2·0
Δ = 0
Delta is equal to zero, so there is only one solution to the equation
Stosujemy wzór:$X=\frac{-b}{2a}=\frac{0}{4}=0$
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