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4x = 8(1 -y) + 1
3 - 4x - 8y + 4 = 0
4x = 8 - 8y + 1
- 4x - 8y = - 1
4x + 8y = 9
dodajemy stronami
- 4x + 4x - 8y + 8y = - 1 + 9
0 = 8 układ sprzeczny