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2014-05-01T22:01:30+03:00
A+b+c=300
a+20=b
c=3b=3(a+20)=3a+60

a+a+20+3a+60=300
4a+80=300
4a=220
a=55
b=75
c=165+60=225
1 5 1
2014-05-01T22:19:39+03:00
a+b+c=300
a+20=b
c=3b=3(a+20)=3a+60
a+a+20+3a+60=300
4a+80=300
4a=220
a=55
b=75
c=165+60=225
1 5 1