Question

{x + 2y = 14 {x + 4y = - 30

Answer 1

Oie, Td Bom?!

{x + 2y = 14

{x + 4y = - 30

{x = 14 - 2y

{x + 4y = - 30

• x + 4y = - 30

14 - 2y + 4y = - 30

14 + 2y = - 30

2y = - 30 - 14

2y = - 44

y = - 44/2

y = - 22

• x = 14 - 2y

x = 14 - 2 . (- 22)

x = 14 + 44

x = 58

S = {(x , y) = (58 , - 22)}

Att. Makaveli1996