Answer:
Option A is correct
[tex]12+(-9)[/tex]
Step-by-step explanation:
Using associative property:
[tex]a+(b+c) =(a+b)+c[/tex] for any values of a, b and c
Given the expression:
8 + [4 + (–9)]
Apply the associative property we have;
[tex][8+4]+(-9)[/tex]
then;
[tex]12+(-9)[/tex]
Therefore, the expression has the same value as 8 + [4 + (–9)] is, [tex]12+(-9)[/tex]