[-x - 2y = 7 [3x + y = 6

1 answer:

8 0

Answer:

$multipling \: eq \: by \: 3 \\ then \: we \: get \: - 3x - 6y = 21 \\ now \: add \: both \: eq \\ - 5y = 27 \\ y = - 5.4$

Step-by-step explanation:

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