Question

se stie ca x/7=y/6=z/5 si x+y+z=32 .calculeaza pe x, y ,z

Answer 1

Răspuns:

$\frac{x}{7} +\frac{y}{6}+\frac{z}{5}= \frac{x+y+z}{7+6+5}=\frac{32}{18} =\frac{16}{9}$

$\frac{x}{7} =\frac{16}{9}$

9x=112 ⇒ $x=\frac{112}{9}$

$\frac{y}{6} =\frac{16}{9}$

9y=96 ⇒$y=\frac{96}{9}$

$\frac{z}{5} =\frac{16}{9}$

9z=80 ⇒ $z=\frac{80}{9}$

Explicație pas cu pas: