13/40=-39/120
-11/60=-22/120
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\(\dfrac{13}{40}=\dfrac{13.3}{40.3}=\dfrac{39}{120}\)
\(\dfrac{11}{60}=\dfrac{11.2}{60.2}=\dfrac{22}{120}\)
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\(\dfrac{13}{40}và\dfrac{11}{-60}\left(MSC240\right)\)
\(\dfrac{13}{40}=\dfrac{11\times6}{40\times6}=\dfrac{66}{240}\)
\(\dfrac{11}{-60}=\dfrac{11\times4}{\left(-60\right)\times4}=\dfrac{-44}{240}\)
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