Ответ:

  1. \(\frac{4}{37}+\frac{5}{37}=\frac{9}{37}\).
  2. \(\frac{16}{98}+\frac{13}{98}=\frac{29}{98}\).
  3. \(\frac{42}{543}+\frac{55}{543}=\frac{97}{543}\).
  4. \(\frac{76}{202}-\frac{24}{202}=\frac{52}{202}=\frac{26}{101}\).