Question

Urgentă dau coroana!!!!

Answer 1

Răspuns:

$\frac{x}{2} = \frac{y}{11} = \frac{z}{7}$

$x + y + z = 80$

$\frac{x + y + z}{2 + 11 + 7} = \frac{80}{20} = 4$

x=8. y=44 z=28

2)(x+y+z)/(6+7+8)=20/21

x=40/7

y=20/3

z=160/21