\(\frac{9}{15}+\frac{3}{5}=\frac{3}{5}+\frac{3}{5}=\frac{6}{5}\)
\(\frac{9}{15}+\frac{3}{5}=?\)
\(\frac{9}{15}+\frac{3}{5}=\frac{45}{75}+\frac{45}{75}\)
\(=\frac{90}{75}\)
Rút gọn ta được: \(\frac{90:3}{75:3}=\frac{30}{25}\Rightarrow\frac{30:5}{25:5}=\frac{6}{5}\)
Đáp số: \(\frac{6}{5}\)