Ta có: \(39\frac{3}{10}:52\frac{2}{5}\)
\(=\frac{393}{10}:\frac{262}{5}=\frac{393}{10}\cdot\frac{5}{262}=\frac{3}{4}\)
Ta có: \(2.1:3.5\)
\(=\frac{21}{35}=\frac{3}{5}\)
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Ta có: 39\(\frac{3}{10}:52\frac{2}{5}\)
=\(\frac{393}{10}:\frac{262}{5}\)=\(\frac{393}{10}.\frac{5}{262}\)=\(\frac{3}{4}\)
Ta có: 2.1:3.5
=\(\frac{21}{35}=\frac{3}{5}\)
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