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[tex]\dfrac{4}{6}=\dfrac{4:2}{6:2}=\dfrac{2}{3}\\\\\\\dfrac{18}{12}=\dfrac{18:6}{12:6}=\dfrac{3}{2}\\\\\\\dfrac{30}{40}=\dfrac{30:10}{40:10}=\dfrac{3}{4}\\\\\\\dfrac{35}{45}=\dfrac{35:5}{45:5}=\dfrac{7}{9}\\\\\\\dfrac{25}{100}=\dfrac{25:25}{100:25}=\dfrac{1}{4}\\\\\\\dfrac{27}{18}=\dfrac{27:9}{18:9}=\dfrac{3}{2}\\\\\\\dfrac{125}{500}=\dfrac{125:125}{500:125}=\dfrac{1}{4}[/tex]
