please answer this question
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Answer:
A . abc
Step-by-step explanation:
B.
2ab+3ab-2ab-4a+6a+a+3b-8b-4b-7-11+5
=3ab+3a-9b-13
C.
6ab-2ab-ab+5a+6a-4a+7b+3b-2b
=3ab+7a+b
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