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Question 5

Pytanie: W przykładzie drugim (układ \(x + 2y = 7,\; 3x - y = 1\)) jaka jest wartość \(y\)?

Select one answer.

\(y = -\tfrac{20}{7}\)

\(y = \tfrac{7}{2}\)

\(y = \tfrac{9}{7}\)

\(y = \tfrac{20}{7}\)

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