Math, asked by ayeshu1080, 6 months ago

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= 4,
1 11
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Answers

Answered by ibrahimks218
1

Answer:

xy = -6

Step-by-step explanation:

все суммируем  

x - y + xy + x - y - xy = -10

2x - 2y = -10

2(x - y) = -10

x - y = -5

теперь подставляем в систему

-5 + xy = -11

xy = -6

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