Different Properties of Operations on Integers

What is the additive inverse of

Which of the following is an example of zero property of multiplication?

 $23+0\ =23,\$  illustrate what property?

What property is being shown in  $19+\left(15+3\right)=\left(19+15\right)+3$  ?

 $9\left(a+3\right)\ =\ \left(9\right)\left(a\right)+\left(9\right)\left(3\right)$  , what property is being applied?

The _____________ property of addition states that any number plus zero equals the same number.

Any number multiplied by 1 is equal to the number itself. What property is being stated?

(12)(-7) = (-7)(12)

 $\left(17\right)\left[\left(8\right)\left(10\right)\right]=\left[\left(17\right)\left(8\right)\right]\left(10\right)$  

Applying distributive property, given   $19\left(a-3\right)$  will be equal to.