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2014-08-01T10:54:35+03:00
A*b*c=27

1)1*3*9=27
a+b+c= 1+3+9=13

2)1*1*27=27
a+b+c=1+1+27=29

3)3*3*3=27
a+b+c=3+3+3=9
28 4 28