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Tenemos.
Numero de conejos = x
Numero de gallinas = 36 - x
Numero de patas de conejos = 4x
Numero de patas de gallinas = 2(36 - x)
4x + 2(36 - x) = 112
4x + 72 - 2x = 112
2x + 72 = 112
2x = 112 - 72
x = 40
x = 40/2
x = 20
Total conejos = x = 20
Total gallina = 36 - x = 36 - 20 = 16
Respuesta.
Hay 20 conejos y 16 gallinas
4p
× -
36 - 112
2p
ENTONCES:
(36(4) - 112) / 4 - 2 = (144 - 112) / 2 = 32 / 2 = 16 ...gallinas.
hay 16 gallinas y 20 conejos.
suerte XD