Question

Explain how (13 + 10) + 5 is solved differently from 13 + (10 + 5).

A) For (13 + 10) + 5, you add 13 + 5 first, then add 10.
For 13 + (10 + 5), you add the 10 + 13 first, then add 5.

B) For (13 + 10) + 5, you add 13 + 10 first, then add 5.
For 13 + (10 + 5), you add the 10 + 5 first, then add 13.

C) For (13 + 10) + 5, you add 13 - 10 first, then add 5.
For 13 + (10 + 5), you add the 10 - 5 first, then add 13.

D) For (13 + 10) + 5, you add 13 + 10 first, then subtract 5.
For 13 + (10 + 5), you add the 10 + 5 first, then subtract 13.

Answer 1

The correct answer should be B.

However, since these only involve addition, the parentheses do not actually make a difference in the answer.