Răspunsuri

2014-03-07T15:32:29+02:00
2a+b+c=142
a+2b+c=144
a+b+2c=146
2a+a+a+b+2b+b+c+c+2c=142+144+146
4a+4b+4c=432
4(a+b+c)=432⇒a+b+c=432/4=108
a+b+c=108
Sper ca te-am ajutat!!!
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