Salutare !
2a + 2b = 12
Aici dam factor comun
2 x ( a + b ) = 12
a + b = 6
1. a = 1 , b = 5
2. a = 2 , b = 4
3. a = 3 ,b = 3
4, a = 4 , b = 2
5 . a = 5 , b = 1
6. a = 6 , b = 0
7 . a = 0 , b = 6
Succes !
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