Question

{x+2y=17
{x-2y=-11 me responde

Answer 1

x + 2y = 17 ∴ 3 + 2y =17∴ 2y = 17-3∴ 2y= 14∴ y= 14/2= 7 x -2y = -11 2x = 6∴ x = 6/2=3