Question

If Kathy has x pens, and her friend gives her 3 more pens. Then, Kathy will have 12 pens altogether. How can you show the relationship between the numbers of pens?

Answer 1

3+x=12

x=9

Explanation:

To solve this question, you can subtract 3 from 12 to get that Kathy started with 9 pens :)