Question

aflati x si y stiind ca sunt direct porpotionate 2 si 3 si ca diferenta lor e  
15

Answer 1

{x;y} d.p. {2;3}==> $\frac{x}{2}$=$\frac{y}{3}$ = K ==> x=2K; y=3K
x-y=15
Inlocuiesti: 2K-3K=15
                 -K=15 ==> K=-15
    x=2K= 2×(-15)= -30
    y=3K=3×(-15)= -45