\(\dfrac{15}{90}\) = \(\dfrac{1}{6}\) = \(\dfrac{1.5}{6.5}\) = \(\dfrac{5}{30}\)
\(\dfrac{120}{600}\) = \(\dfrac{1}{5}\) = \(\dfrac{1.6}{5.6}\) = \(\dfrac{6}{30}\)
\(\dfrac{75}{150}\) = \(\dfrac{1}{2}\) = \(\dfrac{1.15}{2.15}\) = \(\dfrac{15}{30}\)
Ta có:
\(\dfrac{15}{90}=\dfrac{1}{6};\dfrac{120}{600}=\dfrac{1}{5};\dfrac{75}{150}=\dfrac{1}{2}\)
\(\Rightarrow MSC\) là: \(60\)
\(\dfrac{1}{6}=\dfrac{1.10}{6.10}=\dfrac{10}{60}\)
\(\dfrac{1}{5}=\dfrac{1.12}{5.12}=\dfrac{12}{60}\)
\(\dfrac{1}{2}=\dfrac{1.30}{2.30}=\dfrac{30}{60}\)