Answer:
-85
Step-by-step explanation:
1) (2 + 3)
-7 + {12 - 3[50 - 4(5) ] }
2) -7 + {12 - 3[50 - 20] }
-7 + {12 - 3[30] }
3) -7 + 12 - 90
5 - 90
Answer: -85
