Question

[le phuong nhi]

Viet tat ca cac phan so bang 21/39 ma tu so va mau so la so co hai chu so

Answer 1

[Thieu Gia Ho Hoang]

bai toan nay de qua

Answer 2

[Đinh Thanh Tùng]

\(\frac{14}{26}\);\(\frac{28}{52}\);\(\frac{35}{65}\);\(\frac{42}{78}\)

\(\frac{49}{91}\)