Answer:
-112
Step-by-step explanation:
PEMDAS
7{-4+[9-5]-[6-(9-3+8)]-12}
9-3+8=14
7{-4+[4]-[6-(14)]-12}
6-(14)=-8
7{-4+[4]-[-8]-12}
{-4+[4]-[-8]-12}=-16
7{-16}
