Предмет: Алгебра, автор: ahmelkin2014

Помогите сделать 605(в)

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Автор ответа: sedinalana

0

x+y=2/*7⇒7x+7y=14
4x-7y=-10
прибавим
11x=4
x=4/11
y=2-4/11
y=1 7/11
(4/11;1 7/11)

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