August 2018 2 14 Report
1. Metoda podstawiania :
x +2y=-2
2x-y=1

2.Metoda przeciwnych współczynników :
3x-2y=-12
2x-5y=-19

3.Dowolna metoda :
3(x-y)+4x=8
3(x-5y)=5-9y







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