a) Các phân số tối giản là: \(\dfrac{9}{11};\dfrac{16}{23};\dfrac{91}{100}\)
b) \(\dfrac{7}{14}=\dfrac{7:7}{14:7}=\dfrac{1}{2};\dfrac{15}{24}=\dfrac{15:3}{24:3}=\dfrac{5}{8};\dfrac{64}{80}=\dfrac{64:16}{80:16}=\dfrac{4}{5}\)
a) Các phân số tối giản: \(\dfrac{9}{11};\dfrac{16}{23};\dfrac{91}{100}\)
b) \(\dfrac{7}{14}=\dfrac{7:7}{14:7}=\dfrac{1}{2}\) ; \(\dfrac{15}{24}=\dfrac{15:3}{24:3}=\dfrac{5}{8}\) ; \(\dfrac{64}{80}=\dfrac{64:16}{80:16}=\dfrac{4}{5}\)
\(a,\dfrac{9}{11};\dfrac{16}{23};\dfrac{91}{100}.\)
\(b,\dfrac{7}{14}=\dfrac{7:7}{14:7}=\dfrac{1}{2};\dfrac{15}{24}=\dfrac{15:3}{24:3}=\dfrac{5}{8};\dfrac{64}{80}=\dfrac{64:8}{80:8}=\dfrac{8}{10}=\dfrac{4}{5}\)