Mikä luku sopii x:n paikalle?

a) [[$\dfrac{20}{x} = 5 $]]
[[$ x = $]]

b) [[$\dfrac{x}{-3} =-4$]]
[[$ x = $]]

c) [[$\dfrac{x}{7} = -2$]]
[[$ x = $]]

d) [[$\dfrac{-24}{x} = 6$]]
[[$ x = $]]