Question

(-14) + 81 = 81 + (-14)
associative property of addition
distributive property
multiplicative inverse
additive identity
commutative property of addition
Honestly don't know any of these.

Answer 1

associative property im sure

Answer 2

Of course it's associative property.

Answer 3

its not associative.It is commutative property of addition.
here the position changing not the parenthesis.
a+b=b+a is a commutative property

Answer 4

Yes @tutor you are right. In the associative property the parentheses change within two given numbers. But in this case since the integer is negative, it is put into a parenthesis for any confusion of subtraction

@tutor Thank you for catching the mistake.