\({\largeа)}\ \frac{5}{16}:6=\frac{5}{16}:\frac{6}{1}=\frac{5}{16}\cdot\frac{1}{6}>0,\)
\(\phantom{\largeа)}\ \frac{5}{16}\cdot0{,}1=\frac{5}{16}\cdot\frac{1}{10}>0,\)
\(\phantom{\largeа)}\ \frac{5}{16}\cdot({-}7)<0.\)
Ответ: \(\frac{5}{16}\cdot({-}7),\ \frac{5}{16}\cdot0{,}1,\ \frac{5}{16}:6.\)
\({\largeб)}\ 0{,}8\cdot({-}0{,}4)={-}0{,}32<0,\)
\(\phantom{\largeб)}\ 0{,}8:({-}0{,}4)={-}2<0,\)
\(\phantom{\largeб)}\ 0{,}8-({-}0{,}4)=0{,}8+0{,}4=1{,}2>0,\)
\(\phantom{\largeб)}\ 0{,}8+({-}0{,}4)=0{,}8-0{,}4=0{,}4>0.\)
Ответ: \(0{,}8-({-}0{,}4),\ 0{,}8+({-}0{,}4),\ 0{,}8\cdot({-}0{,}4),\ 0{,}8:({-}0{,}4).\)
