Răspunsuri

2014-02-13T16:25:04+02:00
A+b+c=375
b=15+a
b=18-c

18-c=b
c=18+b => c=18+15+a

a+15+a+18+15+a=357

3a=357-15-15-18
3a=309
a=103

b=15+a
b=15+103
b=118

c=18+15+103
c=136
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