Предмет: Алгебра, автор: shocolate121

розвяжіть графічно систему рівнянь {2x-y=-2
{x+y=5

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Автор ответа: Аноним
1

\displaystyle \left \{ {{2x-y=-2} \atop {x+y=5}} \right. \\\\\left \{ {{2x-y=-2} \atop {y=5-x}} \right.\\ \\2x-(5-x)=-2\\x=1\\y=5-1\\y=4\\(x,y)=(1,4)

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Anykasd21: помогите пожалуйста - https://znanija.com/task/49305640
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Places of Interest in Great Britain
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