\(a)\)
Ta có:
\(\orbr{\begin{cases}\frac{3}{16}< \frac{8}{16}=\frac{1}{2}\\\frac{16}{19}=\frac{32}{38}>\frac{19}{38}\end{cases}}\)\(\Rightarrow\)\(\frac{3}{16}< \frac{1}{2}< \frac{16}{19}\)\(\Rightarrow\)\(\frac{3}{16}< \frac{16}{19}\)
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\(b)\)
Ta có:
\(\orbr{\begin{cases}\frac{4}{17}=\frac{12}{51}\\\frac{6}{25}=\frac{12}{50}\end{cases}}\)\(\Rightarrow\)\(\frac{12}{51}< \frac{12}{50}\)\(\Rightarrow\)\(\frac{4}{17}< \frac{6}{25}\)
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