Question

An animal shelter has 18 cats.
The shelter has 9 more cats than dogs.

Which answer choice shows the correct way to find d, the number of dogs the shelter has?

Answer 1

To find the number of dogs, we know that the shelter has 9 more cats than dogs. We can set up the equation:

18 cats = d dogs + 9

To isolate d, the number of dogs, we subtract 9 from both sides:

18 cats - 9 = d dogs + 9 - 9
9 cats = d dogs

Therefore, the correct way to find d, the number of dogs the shelter has, is 9.