Ответ:
- \(0.3\cdot(13-11.5:4.5)=0.3\cdot(13-\frac{23}{9})=0.3\cdot\frac{94}{9}=\frac{47}{15}=3\frac{2}{15}\).
- \((13.3:3.8-3.05)\cdot0.4=(3.5-3.05)\cdot0.4=0.45\cdot0.4=0.18\).
- \((2.4-1.3+3):0.6=4.1:0.6=\frac{41}{6}=6\frac{5}{6}\).
- \((2.8-3.1-4):0.4=(-4.3):0.4=-10.75\).
Ответ: 1) \(3\frac{2}{15}\); 2) \(0,18\); 3) \(6\frac{5}{6}\); 4) \(-10,75\).
