-4
First let's state what we are given:
[tex]\text{ 8 + (-12)}[/tex]To find the sum, we would open the bracket by applying the multiplication of opposite sign rule.
Note: The multiplication of same signs give a positive sign.
The multiplication of opposite signs give a negative sign.
In our question, we have negative signs: The + sign outside and the - sign inside the bracket.
After multiplying:
[tex]\text{ = 8 - 12}[/tex]Then we would solve:
[tex]\text{ = -4}[/tex]Therefore, the sum of 8+(-12) is = -4
The answer isn't in the option posted. There is probably an error in the question or the options given.