Bantuinnnnnn dong kakk​

Jawaban:

persamaan subtitusi

3x -2y = -1

-x + y = -3

y = -3 + x

3x -2y = -1

3x + (-3+x ) = -1

4x = -1+3

4x = 2

x = 2/4

x = 1/2

-x + y = -1

1/2+y = -1

y = -1/1/2

y = -2

x, y = 1/2; -2

2) metode eliminasi

2x + y = 11…….x3

3x -2y = 6…….x2

————————

6x + 3y = 33

6x – 4y = 12

———————(-)

7y = 21

y = 3

2x + y = 11

2x + 3 = 11

2x = 11 -3

2x =8

x =4

x,y = (4,3)