Add using horizontal method.
xy - yz + 2; 2yz + xy - 7 and 3xy + 3yz + 3
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Answer:
5xy - 2 yz - 8
Step-by-step explanation:
xy - yz + 2
xy + 2yz - 7
3xy + 3yz + 3
- -
_______________
5xy - 2yz - 8
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