Commutative Property
3 + -5 + 7 = 3 + 7 + -5
Associative Property
a + b + c = a + (b + c)
Algebraic Definition of Subtraction
"Leave-Change-Flip
8 - 3 = 8 + (-3)
Property of Opposites
-(-X) = X
Commutative Property
a + b + c = a + c + b
Multiplication Property of -1
-1 � a = -a
Distributive Property
2(x + 3) = 2X + 6