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Exercice 98 :
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Enoncé :
Simplifiez les fractions suivantes :
\(\dfrac{45}{60}\)
\(\dfrac{120}{200}\)
\(\dfrac{99}{132}\)
\(\dfrac{150}{180}\)
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Solution :
\(\dfrac{45}{60} = \dfrac{15\times 3}{15\times 4} = \dfrac{3}{4}\)
\(\dfrac{120}{200} = \dfrac{40\times 3}{40\times 5} = \dfrac{3}{5}\)
\(\dfrac{99}{132} = \dfrac{33\times 3}{33\times 4} = \dfrac{3}{4}\)
\(\dfrac{150}{180} = \dfrac{30\times 5}{30\times 6} = \dfrac{5}{6}\)