Пошаговое объяснение:
[tex]2x - y = 5 \\ 3x + y = 7 \\ 5x = 12 \\ x = \frac{12}{5} \\ x = 2.4 \\ 4.8 - y = 5 \\ y = - 0.2[/tex]
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Пошаговое объяснение:
[tex]2x - y = 5 \\ 3x + y = 7 \\ 5x = 12 \\ x = \frac{12}{5} \\ x = 2.4 \\ 4.8 - y = 5 \\ y = - 0.2[/tex]