Răspuns :
X:3:3+24=X /*9 (X=lungimea tevii)
X+216=9X
9X-X=216
8X=216
X=216:8
X=27
V: 27:3:3+24=9:3+24=3+24=27
R: Lungimea tevii = 27 m
X+216=9X
9X-X=216
8X=216
X=216:8
X=27
V: 27:3:3+24=9:3+24=3+24=27
R: Lungimea tevii = 27 m