Ответ:
1) \(0,6=\frac{3}{5}\). Тогда \(\frac{7}{9}-\frac{3}{5}=\frac{35}{45}-\frac{27}{45}=\frac{8}{45}\).
2) \(0,34=\frac{34}{100}=\frac{17}{50}\). Тогда \(\frac{17}{50}+\frac{8}{11}=\frac{187}{550}+\frac{400}{550}=\frac{587}{550}=1\frac{37}{550}\).
3) \(0,55=\frac{55}{100}=\frac{11}{20}\). Тогда \(\frac{25}{36}-\frac{11}{20}=\frac{125}{180}-\frac{99}{180}=\frac{26}{180}=\frac{13}{90}\).
4) \(0,375=\frac{375}{1000}=\frac{3}{8}\). Тогда \(\frac{3}{8}-\frac{3}{19}=\frac{57}{152}-\frac{24}{152}=\frac{33}{152}\).
Ответ: 1) \(\frac{8}{45}\); 2) \(1\frac{37}{550}\); 3) \(\frac{13}{90}\); 4) \(\frac{33}{152}\).
