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2014-06-28T18:02:29+03:00
Ma=(a+b+c)/3=600

a+b+c=3*600
a+b+c=1800

(a+b)/2=220
a+b=440

c=1800-440
c=1360

a=1/5 din c

a=1/5*1360

a=272

272+b=440  

b=440-272
b=168
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