Yêu cầu một hướng dẫn hoặc một công thức.2

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4. Read the post carefully to understand the problem and provide the best reply you can.
5. Make sure your answer replies the question asked in a post and isn't just a comment or gratitude.
6. Be polite and respectful to others.Here are some tips to make your answer helpful and doesn't get deleted by a moderator:
7. Read the post carefully to understand the problem and provide the best reply you can.
8. Make sure your answer replies the question asked in a post and isn't just a comment or gratitude.
9. Be polite and respectful to others.