a) \(\frac{1}{5}:\frac{2}{15}=\frac{1}{5}\times\frac{15}{2}\)
\(=\frac{15}{10}=\frac{3}{2}\)
b)\(\frac{3}{7}:\frac{9}{14}=\frac{3}{7}\times\frac{14}{9}\)
\(=\frac{42}{63}=\frac{2}{3}\)
c) \(\frac{7}{12}:\frac{21}{24}=\frac{7}{12}\times\frac{24}{21}\)
\(=\frac{168}{252}=\frac{2}{3}\)
d) \(\frac{9}{13}:\frac{27}{26}=\frac{9}{13}\times\frac{26}{27}\)
\(=\frac{234}{351}=\frac{2}{3}\)
k nha
A/ 15/10 = 3/2
B/ 42/63 = 2/3
C/ 168/252 = 2/3
D/ 234/351 = 2/3