Question

Ex 6 ca nu stiu pls ca mor

Answer 1

Răspuns:

a/3=b/4=c/14=k → coeficient de proportionalitate

a=3k

b=4k

c=14k

a+b+c=42

3k+4k+14k=42

21k=42=>k=42:21=>k=2

a=3·2=6

b=4·2=8

c=14·2=28

(2a+b+c)/(b+c)=(2·6+8+28)/(8+28)=48/36=4/3