Question

Which property is demonstrated?
3[5(4)] + 3 = [3(5)]4 + 3
A. associative property of addition
B. associative property of multiplication
C. commutative property of addition
D. commutative property of multiplication

Answer 1

Answer:

commutative property of multiplication

Step-by-step explanation:

commutative property of multiplication

Answer 2

Answer:

associative property of multiplication

Step-by-step explanation:

The associative property of multiplication tell us that the result of a multiplication is the same regardless of how we group the multiplicands. In other words we can multiply a[b(c)] or [a(b)]c or b[a(c)]... The way we group the multiplicands doesn't alter the result of the multiplication. In our example 3[5(4)] + 3 = [3(5)]4 + 3 we are just changing the way we group the multiplicands; in other words, we are using the is associative property of multiplication.

Step-by-step explanation:

3[5(4)] + 3 = [3(5)]4 + 3

3[20] + 3 = [15]4 + 3

60 + 3 = 60 +3

63 = 63