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2014-10-01T21:03:25+03:00
A+b+c=4567
a=b+247 =>b=a-247
a=c+187 =>c=a-187
a+a-247+a-187=4567
3a=5001 => a=1667
b=1667-247=1420
c=1667-187=1480
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