Question

[kudo shinichi]

tong hai so la 7/15 neu them vao so thu nhat 1/3 thi tong hai so la bao nhieu

Answer 1

[Mây]

Gọi ST1 là a , ST2 là b

=> \(a+b=\frac{7}{15}\) 

Nếu thêm vào ST1 1/3 

=> \(\left(a+\frac{1}{3}\right)+b=a+b+\frac{1}{3}=\frac{7}{15}+\frac{1}{3}=\frac{12}{15}=\frac{4}{5}\)

Answer 2

[Cold Wind]

Lấy 7/15 + 1/3