i: \(\dfrac{-2}{-9}=\dfrac{\left(-2\right)\cdot\left(-1\right)}{\left(-9\right)\cdot\left(-1\right)}=\dfrac{2}{9}\)
j: \(\dfrac{-7}{-3}=\dfrac{\left(-7\right)\cdot\left(-1\right)}{\left(-3\right)\cdot\left(-1\right)}=\dfrac{7}{3}\)
k: \(\dfrac{1}{-12}=-\dfrac{1}{12}=\dfrac{-1}{12}\)
l: \(\dfrac{8}{-17}=-\dfrac{8}{17}=\dfrac{-8}{17}\)
