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2014-06-19T14:04:18+03:00
A+b+c=589

a-23=3b
a=3b+23

c=2a
c=2(3b+23)= 6b+46

3b+23+b+6b+46=589
10b+69=589

10b=589-69
10b=520

b=52

a=3*52+23= 156+23=179
c=2*179=358