I have 53 Heads and 172 feet. How many chckens and Rabbits do I have.
x chickens
2x chicken feet
(53-x) rabbits
4(53-x) = (212 - 4x) rabbit feet
2x + (212 - 4x) = 172 feet
-2x = -40
x = 20
heads feet
20 chickens 40 chicken feet
33 rabbits (212 - 4(20)) = 132 rabbit feet
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53 172