\(\Leftrightarrow x^2+7x+12=0\Leftrightarrow x^2+3x+4x+12=0\Leftrightarrow x\left(x+3\right)+4\left(x+3\right)=0\)

\(\Rightarrow\hept{\begin{cases}\left|x+1\right|=0\\\left|3-x\right|=0\end{cases}}\Rightarrow\hept{\begin{cases}x+1=0\\3-x=0\end{cases}}\Rightarrow\hept{\begin{cases}x=-1\\x=3\end{cases}}\)

17:18=0,94444...=94,44%

62:17=3,364705...=364,70%

16:24=0,6666...=66,66%