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2014-05-27T18:10:44+03:00
X+y+z=100
x=5y+1 y=(x-1)/5
z=5x+1
x+(x-1)/5+5x+1=100
5x+x-1+25x+5=500
31x=496
x=16
y=(16-1)/5=3
z=16.5+1=81