Răspuns :
( x , y ) d.p ( 5, 4 )
x + y = 54
x/5 = y/4 = k
x = 5k
y = 4k
5k + 4k = 54
9k = 54
k = 54 : 9
k = 6
x = 5 × 6
x = 30
y = 4 × 6
y = 24
x + y = 30 + 24 = 54
x + y = 54
x/5 = y/4 = k
x = 5k
y = 4k
5k + 4k = 54
9k = 54
k = 54 : 9
k = 6
x = 5 × 6
x = 30
y = 4 × 6
y = 24
x + y = 30 + 24 = 54