OLM cung cấp gói bải giảng điện tử PPT cho giáo viên đầu năm học
Đề khảo sát chất lượng đầu năm học cho lớp 2 đến 9, xem ngay!
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
hiệu của hai số là 1,25. Nếu tăng số trừ lên 3 lần thì được một số bị trừ là 5,75. Tìm hai số đó.
Cần gấp lắm mn ơi giúp mình ạ :3
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