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Inmpartiti numarul 36 in 3 parti, x, y, z direct proprotionale cu 3,4,5

Răspuns :

[tex] \frac{x}{3} = \frac{y}{4} = \frac{z}{5} = \frac{x + y + z}{3 + 4 + 5} = \frac{36}{12} = 3[/tex]

[tex] \frac{x}{3} = 3[/tex]

x=9

[tex] \frac{y}{4} = 3[/tex]

y=12

[tex] \frac{z}{5} = 3[/tex]

z=15