Răspuns :
a + b + c = 3 x (a +b)
c = 2 x (a + b) |
c = 14 |
| => a+b = 7
=> a = 3
b = 4 sau invers
c = 2 x (a + b) |
c = 14 |
| => a+b = 7
=> a = 3
b = 4 sau invers