Question

Aflati numerele reale x, y si z stiind că x/3=y/5=z/8=5/42​

Answer 1

Răspuns:

ultima fractie fiind fara necunocute o egalăm cu fiecare

in parte.

x/3=y/5=z/8=5/42

x=3×5/42=15/42=(:3)=5/14

y=5×5/42=25/42

z=8×5/42=40/42=(:2)=20/21

Answer 2

x/3=y/5=z/8=5/42

x=(3×5)/42=5/14

y=(5×42)/5=42

z=(8×5)/42=(4×5)/21=20/21