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4patas 2patas
4x+2(42-x)=108
4x+84-2x=108
2x=108-84
X=12 12 conejos
(42-12)= 30 30 gallinas
4C + 2G = 108
4(42-G) + 2G= 108
168 - 4G + 2G = 108
168 -2G = 108
168 - 108 = 2G
60/2 = G
G = 30
C + G = 42
C + (30) = 42
C= 42-30
C= 12
30 GALLINAS Y 12 CONEJOS
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