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3 2 4
x(8)+12(x-1)+6(x+1) = x+1
(3)(2)(4)
8x+12x-12+6x+6 = x+1
24
8x+12x+6x+6-12=24(x+1)
26x-6=24x+24
26x-24x=24+6
2x=30
x=30/2
x=15
anteior=x-1..........15-1=14
siguiente=x+1.....15+1=16
los numeos son 14 , 15 y 16
15 + 14 + 16 = 16
3 2 4
5+7+4=16
16=16