Question

determinati numarul natural a , stiind ca u + 3 v = 24 si au+ 3 av= 72.repede va rog ofera coroana

Answer 1

u + 3v = 24
a(u + v) = 72
a * 24 = 72
a = 72 : 24
a = 3

Answer 2

u + 3 v = 24

au+ 3 av= 72 ⇒a(u+3v) =72 ⇒ a·24 =72 ⇒ a =3