February 2019 0 17 Report
Rozwiaz uklady rownan metoda przeciwnych wspolczynnikow d) 2x - 3y = 7 3x - 5y = 11 e) 5p - 2r = 21 3p + 5r = -6 f) 2x - 3y = 10 5x + 5y = 0

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