xin lỗi đáp án  =1540 nhé

ban khong tra loi thi thoi

tốn diện tích quá

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Tốn giấy quá, OLM xóa đi

9724 e nhé!

467674 + 7653865 = 8121539

mình biết đây là trang toán nhưng ngày mai mình phải nộp bài rồi