A pet rescue home has an equal number of parrots, cats, and dogs. When the owner counts all of her pets, she observes a total of 30 legs. How many cats are there?
Let the number of each type of pet be denoted as . Since each parrot has 2 legs, each cat has 4 legs, and each dog has 4 legs, the total number of legs can be expressed as:
Determine the value of to find the number of cats.
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