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∵x+y+xy=8,∴x+y+xy+1=8+1,∴(x+1)(y+1)=9,同理可得:(y+1)(z+1)=16,(x+1)(z+1)=36,解得x=72,y=1,z=7.∴x+y+z+xyz=72+1+7+72×1×7=36.故填36.
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