(-0.1) / (2 / (-2))

(2/(-2))

= -(2/2) take (-) sign out

= -1

(-0.1)/(2/(-2))

= (-0.1)/(-1) Division of two (-) signs become (+)

= 0.1/1

= 0.1

So the answer is;

(-0.1)/(2/(-2))= 0.1