\(\dfrac{3}{7}+\dfrac{5}{9}=\dfrac{27}{63}+\dfrac{35}{63}=\dfrac{62}{63}\)
Đúng 5
Bình luận (1)
\(\dfrac{3}{7}+\dfrac{5}{9}\)
\(=\dfrac{27}{63}+\dfrac{35}{63}\)
\(=\dfrac{27+35}{63}\)
\(=\dfrac{62}{63}\)
Đúng 2
Bình luận (0)