tìm các số tự nhiên n để phân số A=8n+193/4n+3 có giá trị số tự nhiên cho mik hỏi mình làm cách này đúng không ạ vì 8n+193 chia hết cho 4n+3 =>4n+3 chia hết cho 4n+3 =>4.(8n+193)-8.(4n+3) đến chỗ này cho mình hỏi là tại sao lại đóng ngoặc (8n+193) và (4n+3) các bạn giải thik chi tiết chỗ này giúp mik với giải thik chi tiết từng bước giải xong mik vote 5 sao cảm ơn nhiều ạ giúp mik với

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