Răspunsuri

2014-04-27T15:22:47+03:00
Daca(x,z,u,2)este direct proportional cu (y,t,v,5)⇒
x/y=z/t=u/v=2/5
x=2y/5
z=2t/5
u=2v/5 
inlocuind
si dand factor pe 2/5⇒
2/5(4y+3t+u)/(4y+3t+u)=2/5