Notam L=lalele, G= garoafe , T= trandafiri
L+G+T = 590
G/7=L/3 ( aducem la acelasi numitor) => 3×G = 7×L => G= (7×L)/3
L/5=T/3 ( aducem la acelasi numitor) => 3×L= 5×T => T= (3×L)/5
L +(7×L)/3 + (3×L)/5 = 590 (inmultim toata ecuatia cu 15 pt a scapa de numitor)
15×L + 35×L + 9×L = 590×15
59×L=8850 ( impartim prin 59)
L = 150 ( 150 LALELE)
G= (7×150)/3 = 1050/3 =350 ( 350 GAROAFE )
T = (3×150)/5 = 450/5 = 90 ( 90 TRANDAFIRI )