Question

{(-45)+[(+34)-(+19)]}+(+16)??

Answer 1

{(-45)+[34-19]}+16
{-45+15}+16
-30+16
-14

Answer 2

Olá,

Vamos la´,

={(-45)+[(+34)-(+19)]}+(+16)
={(-45)+[(+34-19)]}+16
={-45+ 15}+16
= - 30 + 16
= -14