Which property of algebra should first be applied to 6a - 146 + 3a - 6 + 216 - 18a in order to determine whether it is equivalent to -9a + 76 - 6? (1 point)

O Commutative Property
• Identity Property
O Distributive Property
O Associative Property

The property that should first be applied to determine whether the expression 6a - 146 + 3a - 6 + 216 - 18a is equivalent to -9a + 76 - 6 is the Associative Property.