Question

A) -9+3{-5+4[(-10-12-6)+3]-7}+5

Answer 1

-9+3{-5+4[(-22-6)+3]-7}+5
-9+3{-5+4[-28+3]-7}+5
-9+3{-5+4[-25]-7}+5
-9+3{-5-100-7}+5
-9+3{-112}+5
-9-336+5
-340