Question

Select the correct reason for statement 3.



Prove: (9m) ∙ 4 + m = 37m


Statements Reasons
1. (9m) ∙ 4 + m 1. Given
2. 4 ∙ (9m) + m 2. Commutative Property
3. (4 ∙ 9) ∙ m + m 3.
4. 36m + m 4. Commutative Property
5. 37m 5. Addition

Answer 1

#3 Associative Property.
"associate" is "grouping". 4 * (9 * m) can be grouped as (4 * 9) * m (Associative Property).