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andrew11 [14]
3 years ago
14

5 năm trước tổng số tuổi của hai mẹ con là 55 tuổi. Hiện nay tuổi con bằng 4/9 lần tuổi mẹ. Tính số tuổi của mẹ và tuổi con hiện

nay?
Mathematics
1 answer:
soldi70 [24.7K]3 years ago
3 0

Answer:

12

Step-by-step explanation:

12

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