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2014-10-15T10:05:01+03:00
A+b+c = 4567
a=b+247
b+247=a=>
b=a-247

a=187+c
187+c=a=> 
c=a-187

a+a-247+a-187=4567
3a=4567+247+187
3a = 5001
a=5001:3
a=1667

b=1667-247
b=1420

c=1667-187
c=1480

4 5 4