Question

{x+2y=4

{x-y=1


resolva o sistema

Answer 1

{x+2y=4 {x-y=1  (2)


x + 2y = 4
2x - 2y = 2
  3x = 6
   x = 2

2y = 4 - x
2y = 4-2
2y = 2
  y = 1


V = {( 2,1)}