Question

Va rog sa ma ajutati! EXERCITIUL 3

Answer 1

{x, y} DP {3, 4} ⇔ x/3 = y/4

x = 3k

y = 4k

y = x + 14

4k = 3k + 14

k = 14

x = 42

y = 56

Answer 2

(x,y) d.p. (3,4) => x/3=y/4
y=x+14

x/3=(x+14)/4 => 3(x+14)=4x => 3x+42=4x =>
42=4x-3x => x=42
y=42+14=56