(1) Compara as frações (insere o sinal (<), (>) ou (=)):

(a) \( \dfrac{5}{7} \; \square \; \dfrac{5}{20} \)

(b) \( \dfrac{8}{9} \; \square \; \dfrac{8}{15} \)

(c) \( \dfrac{12}{15} \; \square \; \dfrac{6}{15} \)

(d) \( \dfrac{16}{8} \; \square \; \dfrac{8}{8} \)

(2) Compara as frações (insere o sinal (<), (>) ou (=)):

(a) \( \dfrac{7}{6} \; \square \; \dfrac{60}{66} \)

(b) \( \dfrac{8}{12} \; \square \; \dfrac{4}{6} \)

(c) \( \dfrac{11}{12} \; \square \; \dfrac{11}{35} \)

(d) \( \dfrac{13}{20} \; \square \; \dfrac{12}{34} \)