Okay so basically the question is asking you to write an equation to show the amount of fish in a small aquarium. What is given to you is that there are 19 fish in the large aquarium and a small aquarium holds 6 less fish than the large aquarium. So based on that you know that if you do 19-6 you get the amount of fish in the small aquarium. Now all you have to do is make the equation. :) hope that helped.
**Answer: **The required equation : x + 6 = 19
There are 13 fishes in small aquarium. ;
We set up the equation x + 6 = 19 to find the number of fish in the small aquarium. By solving the equation, we find that there are 13 fish in the small aquarium. The variable x represents the number of fish in the small aquarium.
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