Question

(3xy – 4yz + 9) + (4xy + 8yz – 19)​

Answer 1

Answer:

3xy - 4yz + 9 + 4xy + 8yz - 19

3xy + 4xy - 4yz + 8yz + 9 - 19

7xy + 4yz - 10

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Answer 2

Answer:

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