Răspunsuri

2014-04-26T14:31:22+03:00
2a+2b+c=21
2(a+b)=21-c
c=3
(a+b)=18/2
a+b=9
a=1;b=8  
a=2;b=7
a=3;b=6
a=4;b=5

II c=5
a+b=8
a=1;b=7
a=2;b=6
a=3;b=5

III c=1
a+b=5
a=1;b=4
a=2;b=3

2014-04-26T14:31:59+03:00