Jill's fish weighs 8 times as much as her bird. together the pets weigh 63 ounces. how much does the fish weigh

We'll let the weight of her bird be represented with x.

So we can derive the formula: bird(x) + fish (8x) =63 ounces

x+8x=63
9x=63
x=7

So the weight of the bird is 7 ounces, but we're trying to find the weight of the fish which is 8 times the bird so:

8(7)=56

Therefore the weight of the fish is 56 ounces