Răspunsuri

  • Utilizator Brainly
2014-03-31T14:58:20+03:00
X/3=y/5=z/9=k ⇒ x=3k, y=5k, z=9k ⇒ xy=15k², yz=45k², zx=27k² ⇒
5k²+45k²+27k²=1392 ⇒ 87k²=1392, k²=16, k=4 ⇒ x=12, y=20, z=36