-18=-18 by the reflexive property of equality.
14 + 18 = 18 + 14 demonstrates the commutative property (of addition).
Identity property of addition.
Commutative propertry
6(2 + 1) = 18==========
Equality
Commutativity or Abelian property
This is the Commutative property or law.
14 + 18 = 18 + 14 demonstrates the commutative property (of addition).
The Answer is Commutative Property
The existence, for the number 18, of an additive inverse which is -18.
Identity property of addition.
Commutative propertry
6(2 + 1) = 18==========
2(x + 3) = 18 or did you mean that solution would be x = 18? then 2(x + 3) = 42
Equality
The existence of an additive identity, denoted by 0, which has the property that x + 0 = 0 + x = x for all x belonging to a set of numbers.
Commutativity of multiplication.There is also, implicitly, the property that equals plus equals are equal.Commutativity of multiplication.There is also, implicitly, the property that equals plus equals are equal.Commutativity of multiplication.There is also, implicitly, the property that equals plus equals are equal.Commutativity of multiplication.There is also, implicitly, the property that equals plus equals are equal.