Properties of integers

According to commutative property, a x b =

Which property is used in this ? 8 + (3 + 4) =( 8 + 3) + 4

Which property is used in this ? 9 x 2 = 2 x 9

Closure property of integers states that if a and b are integers then a + b = c, is also an integer ?

Which property is used in this ? 7 x (12-9) = (7 x 12) - (7 x 9)

The product of a positive and a negative integer is negative

The product of odd number of negative integers is a negative integer

Integers are closed under subtraction

When we change the order of Integers. Their difference remains the same.

( -5) x ( 33) = 5 x (-33)