Salut!
Metoda figurativă:
Notăm:
n¹=nuferi albi.
n²=nuferi galbeni.
n¹= n²/2 => n²= 2× n¹.
n¹ |--------|
n²|--------|--------| } 51
51÷3=17( nuferi albi/un segment).
17×2=34(nuferi galbeni).
Metoda algebrică:
n¹=nuferi albi.
n²=nuferi galbeni.
n¹+n²=51
n¹=n²/2 => n²= 2×n¹
2×n¹+n¹=51
3n=51
n¹=17.
n²=17×2=34.
