Răspuns :
fie x si y =o constanta k
x=5k
iar y=4k
5k+4k=54
9k=54
k=6
x=5k=5*6=30
y=4k=4*6=24
coroana?
x=5k
iar y=4k
5k+4k=54
9k=54
k=6
x=5k=5*6=30
y=4k=4*6=24
coroana?
{x,y} d.p {5,4} ⇔ x/5=y/4=(x+y)/(5+4)
⇒x/5=54/9=>x=(54*5):9=>x=30
⇒30/5=y/4=>y=(30*4):5=>y=24
Proba:30+24=54
30/5=24/4
6=6
⇒x/5=54/9=>x=(54*5):9=>x=30
⇒30/5=y/4=>y=(30*4):5=>y=24
Proba:30+24=54
30/5=24/4
6=6