\(\dfrac{18}{21}=\dfrac{6}{7}\)=\(\dfrac{12}{14}=\dfrac{36}{42}\)=\(\dfrac{90}{150}=\dfrac{3}{5}\)=\(\dfrac{12}{20}=\dfrac{60}{100}=\dfrac{21}{35}\)
\(\dfrac{18}{21}=\dfrac{12}{14}=\dfrac{6}{7}=\dfrac{36}{42}\)
\(\dfrac{90}{150}=\dfrac{12}{20}=\dfrac{60}{100}=\dfrac{3}{5}=\dfrac{21}{35}\)