Question

Which shows the use of the commutative property?

3 (7 + n) = 21 + 3 n
7 + (3 + n) = (7 + 3) + n
3 n + 7 = 7 + 3 n
(7 + 3) + n = 10 + n

Answer 1

Your answer is C.

3n+7=7+3n.

Hope this helps.

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Answer 2

`3n + 7 = 7 + 3n`

Explanation:

Given

Options (a) to (d)

Required

Determine which uses commutative property

Commutative property states that:

`A + B = B + A`

From the list of options, only option (c) obeys this property.

`3n + 7 = 7 + 3n`