Question

{×+y=5
{3×-y=3


{×+2y=11
{2×+3y=17​

Answer 1

1)

x=5-y

3(5-y)-y=3

15-3y-y=3

15-4y=3

-4y=3-15

-4y=-12

y=-14/-4

y=3

x=5-3

x=2

(2,3)

2)

x=11-2y

2(11-2y)+3y=17

22-4y+3y=17

22-1y=17

-1y=17-22

-1y=-5

y=5

x=11-2(5)

x=11-10

x=1

(1,5)

Answer 2

Resposta:

x + y= 5

3x - y =3

4x =8 x + y = 5

x= 8/4 (2) + y = 5

x= 2 2 + y = 5

y = 5 - 2

y = 3

x + 2y = 11 (-3 )

2x + 3y= 17 (2 )

-3x - 6y = -33 x + 2y = 11

4x + 6y = 34 (1 ) + 2y = 11

x = 1 1 + 2y = 11

2y = 11 - 1

2y = 10

y = 10/ 2

y = 5