Answer:
14) 20 + x + y
15) y + x + 20
Explanation:
Question 14 Explanation:
This question is asking for the total number of books sold on both days.
First Day:
- Your friend sold 14 books
- You sold y books
Second Day:
- Your friend sold x books
- You sold 6 books
To find the total number of books sold on both days, you add all of these values up:
- 14 + y + x + 6 = 20 + x + y
It doesn't matter in what order you express this thanks to the Communatitive Property of Addition explained below.
Question 15 Explanation:
The Communatitive Property of Addition states that the order of addends do not change the sum. In other words, you can put the addends in any order you want and still get the same sum. You can express 20 + x + y in any order to answer this question (e.g. 20 + y + x, y + x + 20, etc)
Hope this helped!