Question

sistema do 1° grau

{x-6y=16
{2x+6y=8

{5x+2y=11
{7x-2y=1

Answer 1

{x-6y=16
{2x+6y=8
3x= 24
x= 24:3
x=8
x-6y=16
8 -6y= 16
-6y= 16-8
-6y= 8
y= -8
      6
y= - 4
       3

{ 5x+2y=11
{ 7x-2y=1
 12x= 12
x= 12:12
x= 1

 5x+2y=11
5*1 + 2y = 11
5 + 2y= 11
2y= 11 -5
2y= 6
y= 6:2
y= 3

espero ter ajudado