Відповідь: (13; 1)
Пояснення:
Метод підстановки.
Ответ:
[tex]\left \{ {{x=13} \atop {y=1}} \right. \\\\(13;1)[/tex]
Объяснение:
[tex]\left \{ {{x-5y=8\ \ \ |\cdot(-2)} \atop {2x+4y=30}} \right. \\\\\left \{ {-2x+10y=-16 \atop {2x+4y=30}} \right.[/tex]
+______
[tex]14y=14\ \ \ |:14\\\\y=1[/tex]
[tex]\left \{ {{x-5y=8} \atop {y=1}} \right. \\\\\left \{ {{x-5\cdot1=8} \atop {y=1}} \right. \\\\\left \{ {{x-5=8} \atop {y=1}} \right. \\\\\left \{ {{x=8+5} \atop {y=1}} \right. \\\\\left \{ {{x=13} \atop {y=1}} \right.[/tex]
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Verified answer
Відповідь: (13; 1)
Пояснення:
Метод підстановки.
Ответ:
[tex]\left \{ {{x=13} \atop {y=1}} \right. \\\\(13;1)[/tex]
Объяснение:
[tex]\left \{ {{x-5y=8\ \ \ |\cdot(-2)} \atop {2x+4y=30}} \right. \\\\\left \{ {-2x+10y=-16 \atop {2x+4y=30}} \right.[/tex]
+______
[tex]14y=14\ \ \ |:14\\\\y=1[/tex]
[tex]\left \{ {{x-5y=8} \atop {y=1}} \right. \\\\\left \{ {{x-5\cdot1=8} \atop {y=1}} \right. \\\\\left \{ {{x-5=8} \atop {y=1}} \right. \\\\\left \{ {{x=8+5} \atop {y=1}} \right. \\\\\left \{ {{x=13} \atop {y=1}} \right.[/tex]