Question

x+4y=1
4x+2y=5/2

ajuda por favor​

Answer 1

Oie, Td Bom?!

{x + 4y = 1 ⇒ x = 1 - 4y

{4x + 2y = 5/2

• 4x + 2y = 5/2

4(1 - 4y) + 2y = 5/2

4 - 16y + 2y = 5/2

4 - 14y = 5/2

- 14y = 5/2 - 4

- 14y = - 3/2

y = 3/28

• x = 1 - 4y

x = 1 - 4 . 3/28

x = 1 - 3/7

x = 4/7

S = {(x , y) = (4/7 , 3/28)}

Att. Makaveli1996