Question

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




{-x+2y= -3
{5x-2y= -1



{2x-y=3
{x + y=3​

Answer 1

Explicação passo-a-passo:

{-4x-2y=3

{3x+2y=4

-x = 7

x = -7

28 - 2y = 3

2y = 25

y = 25/2

S = (-7, 25/2)

{-x+2y= -3

{5x-2y= -1

4x = -4

x = -1

1 + 2y = -3

2y = -4

y = -2

S = (-1, -2)

{2x-y=3

{x + y=3​

3x = 6

x = 2

4 - y = 3

y = 1

S = (2, 1)