Question

resolva 5-{6+[-3+(9-15)]}=

Answer 1

5-{6+[-3+(9-15)]}=
=5-{6+[-3+(-6)]}=
=5-{6+[-3-9]}=
=5-{6+[-12]}=
=5-{6-12}=
=5-{-6}=
=5+6=
=11

espero ter ajudado

Answer 2

(9-15)= -6
[-6-3= -9]
{ -9+6=-3}
+5-3=2