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Answer :

Answer:

x = 1

y = -4

Step-by-step explanation:

y = -x - 3

y + 3 = -x

x = - y - 3

y = -7(-y - 3) + 3

y = 7y + 21 + 3

y = 7y + 24

-6y = 24

y = -4

-4 = -x - 3

-1 = -x

x = 1