tentukan himpunan penyelesaian dari SPLDV berikut! a. 2x - y = 4 y = -2x b. 3y - 2x = 6 y = x + 1

2x - y = 4
2x + y = 0
__________ _
-2y = 4
y = -2

Substitusi y = -2

2x - y = 4
2x -(-2) = 4
2x = 4 - 2
2x = 2
x = 1

HP = {(1, -2)}

________

3y - 2x = 6
y - x = 1
__

3y - 2x = 6
2y - 2x = 2
__________ _
y = 4

Substitusi y = 4

y - x = 1
4 - x = 1
x = 3

HP = {(3, 4)}