Решите систему уравнений поже! 7 класс. 2х+у=7, х+3у=6.

Решите систему уравнений поже! 7 класс.
2х+у=7,
х+3у=6.
- Предмет:
  Математика
- Автор:
  guy38
- 5 лет назад

Ответы 2

путем вычитания из второго уравнения первое получаем х-2у=1х=1+2уподставляя это в первое уравнение, получаем2+4у+у=75у=5у=1следовательно, х=1+2х=3
- Автор:
  alfie
- 5 лет назад
- 0
$2x+y=7 \\ x+3y=6/*(-2) \\ \\ 2x+y=7 \\ -2x-6y=-12 \\ -5y=-5 \\ y=1 \\ 2x+1=7 \\ 2x=7-1 \\ 2x=6 \\ x=3 \\ \\ \left \{ {{y=1} \atop {x=3}} ight.$
- Автор:
  figaroutlu
- 5 лет назад
- 0
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To Create a Customer
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Решите систему уравнений поже! 7 класс. 2х+у=7, х+3у=6.

Ответы 2

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Решите систему уравнений поже! 7 класс.
2х+у=7,
х+3у=6.