Răspuns :
a/5 = b/8 = k
=> a/5 = k => a = 5k
=> b/8 = k => b = 8k
=> b - a = 45
=> 8k - 5k = 45
=> 3k = 45
=> k = 45/3
=> k = 15
=> a = 5k => a = 5 • 15 => a = 75
=> b = 8k => b = 8 • 15 => b = 120
=> a/5 = k => a = 5k
=> b/8 = k => b = 8k
=> b - a = 45
=> 8k - 5k = 45
=> 3k = 45
=> k = 45/3
=> k = 15
=> a = 5k => a = 5 • 15 => a = 75
=> b = 8k => b = 8 • 15 => b = 120
(a;b) d.p. (5;8) => a/5 = b/8 = (b - a) / (8-5) = 45 / 3 = 15
⇵
a = 5*15 = 75
b = 8*15 = 120
⇵
a = 5*15 = 75
b = 8*15 = 120