Ta có: \(\dfrac{144}{28}=\dfrac{36}{7};\dfrac{1212}{1515}=\dfrac{4}{5}\)
MSC: 280
\(\dfrac{5}{8}=\dfrac{5\times35}{8\times35}=\dfrac{175}{280}\)
\(\dfrac{36}{7}=\dfrac{36\times40}{7\times40}=\dfrac{1440}{280}\)
\(\dfrac{4}{5}=\dfrac{4\times56}{5\times56}=\dfrac{224}{280}\)
Ta có: [Math Processing Error]14428=367;12121515=45
MSC: 280
[Math Processing Error]58=5×358×35=175280
[Math Processing Error]367=36×407×40=1440280
[Math Processing Error]