Rashal is adding the expression below. –3 + [(–7) + (–6)] first, he rewrites the expression. [–3 + (–7)] + (–6) which number property did rashal use to rewrite the expression?
associative property
commutative property
distributive property
identity property

To rewrite the expression –3 + [(–7) + (–6)]  as  [–3 + (–7)] + (–6) , Rashal uses associative property.

Step-by-step explanation:

Given : Rashal is adding the expression below. –3 + [(–7) + (–6)]

First, he rewrites the expression. [–3 + (–7)] + (–6)

We have to state which number property did Rashal use to rewrite the expression.

For a , b and c be integers, the following are the property under addition,

Thus, To rewrite the expression –3 + [(–7) + (–6)]  as  [–3 + (–7)] + (–6) , Rashal uses associative property.