Question

resolva os sistemas lineares abaixo: a){3x-2y=4
2x+4y=8

Answer 1

{ x = 4 + 2 y
-- --
3 3
2x+ 4y=8

( 4 + 2y) + 4y=8
-- --
3 3

y=1

x = 4 + 2 . 1
-- --
3 3
x= 2
(x,y) = (2,1)

{3.2-2.1 = 4
2.2+4.1 = 8

{4=4
8=8