\(\dfrac{24}{48}-\dfrac{1}{3}\)
\(=\dfrac{1}{2}-\dfrac{1}{3}\)
\(=\dfrac{3}{6}-\dfrac{2}{6}\)
\(=\dfrac{1}{6}\)
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\(\left(\dfrac{3}{5}-\dfrac{1}{2}\right):\dfrac{3}{10}\)
\(=\left(\dfrac{6}{10}-\dfrac{5}{10}\right):\dfrac{3}{10}\)
\(=\dfrac{1}{10}:\dfrac{3}{10}\)
\(=\dfrac{1}{10}\times\dfrac{10}{3}\)
\(=\dfrac{1}{3}\)
Đúng 6
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( 3/5 - 1/2 ) : 3/10
= 1/10 : 3/10
= 1/3
Đúng 4
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