Trả lời :
\(\frac{42}{15.7}\)= \(\frac{2.3.7}{3.5.7}\)= \(\frac{2}{5}\)
\(\frac{4.33}{11.12}\)= \(\frac{4.3.11}{11.3.4}\)= \(1\)
_Học tốt
\(\frac{42}{15.7}=\frac{3.2.7}{3.5.7}=\frac{2}{5}\)
\(\frac{36.6}{336}=\frac{3.4.3.3.2}{2.4.2.3.7}=\frac{3.3}{2.7}=\frac{9}{14}\)
\(\frac{4.33}{11.12}=\frac{4.11.3}{11.3.4}=1\)