Предмет: Алгебра, автор: polinka90979

Решите плииииз, очень надо,но го тип

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Автор ответа: EmiliedeRavin

3х-y=-1
2y-x=7

-y=-1-3x I*(-1)
2y-x=7

y=3x+1
2*(3x+1)-x=7
6x+2-x=7
5x=7-2
5x=5
x=1

y=3*1+1=3+1=4

Ответ: (1;4)

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