4x - 2y = 12 y = (4x - 12)/2
приравняем игрики:
-х = (4x - 12)/2
-2х = 4х - 12
6х = 12
х = 2
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4x - 2y = 12 y = (4x - 12)/2
приравняем игрики:
-х = (4x - 12)/2
-2х = 4х - 12
6х = 12
х = 2