Ответ:
- \(0.8-\frac{5}{9}=\frac{4}{5}-\frac{5}{9}=\frac{36-25}{45}=\frac{11}{45}\).
- \(0.48+\frac{3}{8}=\frac{12}{25}+\frac{3}{8}=\frac{96+75}{200}=\frac{171}{200}\).
- \(\frac{29}{36}-0.65=\frac{29}{36}-\frac{13}{20}=\frac{145-117}{180}=\frac{28}{180}=\frac{7}{45}\).
- \(0.875-\frac{5}{23}=\frac{7}{8}-\frac{5}{23}=\frac{161-40}{184}=\frac{121}{184}\).
Ответ: 1) \(\frac{11}{45}\); 2) \(\frac{171}{200}\); 3) \(\frac{7}{45}\); 4) \(\frac{121}{184}\).
