Question

Sa se afle 2 numere x si y stind ca x - y=10 si x pe y =5 pe 3

Answer 1

a. 3x=5y => x= 5y/3
x-y=10 => 5y/3 - y = 10 => 5y- 3y = 30 => 2y = 30 => y = 15; x= 25

b. 5x= 3y => x=3y/5
3x-y= 12 => 9y/5 - y = 12 => 9y-5y = 60 => 4y=60 => y= 15 ; x = 9

Answer 2

x-y=10
x/y= 5/3=K⇒ x=5k si y=3k
5k-3k=10⇒ 2k=10 ⇒ k=5
x=25 si y= 15