\(\frac{1}{4}=\frac{1}{5}+\frac{1}{20}\)
\(\frac{8}{21}=\frac{1}{21}+\frac{1}{3}\)
\(\frac{1}{4}=\frac{1}{12}+\frac{1}{6}\)
\(\frac{8}{21}=\frac{1}{21}+\frac{1}{3}\)
\(\frac{1}{4}=\frac{1}{6}+\frac{1}{12}\)
\(\frac{8}{21}=\frac{1}{3}+\frac{1}{21}\)
Bài này cũng khá dễ
1/4 = 1/6 + 1/12
8/21 = 1/3 + 1/21
Bài này cũng khá dễ