Question

Aflati a ,b, c stiind ca 3a+2b+9c=30

Answer 1

3a+2b+9c=30

3a+2b+9c=k

a=k/3

b=k/2

c=k/9

3*k/3+2*k/2+9*k/9=30

k=30;

a=30/3=10;

b=30/2=15;

c=30/9=3,(33).

Macks!

Bafta!