Răspuns :
T=nr tei
F=nr fago
S=nr stejari
T+F+S=667
F=4T
S=F+82=4T+82 si inlocuim in prima relatie in functie de T:
T+4T+(4T+82)=667
9T+82=667
9T=585
T=65 tei
F=4*65=260 fagi
S=260+82=342 stejari
F=nr fago
S=nr stejari
T+F+S=667
F=4T
S=F+82=4T+82 si inlocuim in prima relatie in functie de T:
T+4T+(4T+82)=667
9T+82=667
9T=585
T=65 tei
F=4*65=260 fagi
S=260+82=342 stejari
T + F + S = 667
F = 4 x T
S = 82 + F => S = 82 + ( 4 x T )
Si acum inlocuim .
T + 4 x T + 82 + 4 x T = 667
9 x T = 667 - 82
9 x T = 585
T = 585 : 9
T = 65
F = 4 x 65
F = 260
S = 82 + 260 => S = 342
65 + 260 + 342 = 667 .
F = 4 x T
S = 82 + F => S = 82 + ( 4 x T )
Si acum inlocuim .
T + 4 x T + 82 + 4 x T = 667
9 x T = 667 - 82
9 x T = 585
T = 585 : 9
T = 65
F = 4 x 65
F = 260
S = 82 + 260 => S = 342
65 + 260 + 342 = 667 .