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Add 9a+8b-a+b and 10a-9b+6a-1b
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9a+8b-a+b and 10a-9b+6a-1b

User Daniel Elkington
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8a + 9b and 16a - 10b

User Forevergenin
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Answer:

8a + 9b and 16a - 10b

Explanation:

User Pkazmierczak
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