What is the property of this equation? -3(x+4)=-3x-12

Distributive Property
Associative Property of Addition
Associative Property of Multiplication
Commutative Property of Addition

3 answers

What does your textbook or your notes say about each of
those properties? They must show examples of each one.
Thinking it is the distributive property?
yes it is

a(b+c) = ab + ac