Question

x si y sunt direct proportionale cu 3 si 4. Aflati numerele stiind ca y este mai mare cu 14 decat x.

Answer 1

 { x,y } d.p { 3,4 }

x / 3 = y / 4 = K
x / 3 = K => x = 3 K
y / 4 = K => y = 4 K

4 K = 14 + 3 K
K = 14



x = 3 x 14 = 42

y = 4 x 14 = 56

Answer 2

x/3=y/4
x/3=(x+14)/4
4x=3x+3*14
x=3*14
x=42
y=x+14=42+14
y=56
as simple as that!!!