Question

Aflati numerele x si y, stiind ca sunt direct proportionale cu 2 si 3 si ca diferenta lor este 15.

Answer 1

y-x=15
{x,y}dp{2,3}
x/2=y/3=k
x=2k
y=3k
inlocuim in relatia
y-x=15
3k-2k=15
k=15
x=2k=2·15=30
x=30
y=3k=3·15=45
y=45

verificare
45-30=15

Answer 2

x;y dp 2,3 
x/2=y/3=k
x-y=15
x=2k
y=3k
3k-2k=15
k=15
x=2*k=>x=2*15
x=30 
y=3*k=>y=15*3
y=45
VERIFICARE:45-30=15
SPER CA TE-AM AJUTAT :***