Question

Cine poate sa-ma ajute si cu problema asta, nu e obligatorie.
$\frac{x}{y} = \frac{5}{8} si \: 3x + 2y = 62$
Multumesc!

Answer 1

x/y=5/8
x/5=y/8=k
x=5k
y=8k
3x+2y=62
3×5k+2×8k=62
15k+16k=62
31k=62
k=62:31
k=2
revenind la x
x=5×2=10
y=8×2=16