Tentukan himpunan penyelesaian dari SPLDV 2x+y=3 dan x-3y=5

2x + y = 3    |x1|    2x + y = 3
x - 3y = 5     |x2|    2x - 6y = 10
                          --------------------- (-)
                                    7y = -7
                                      y = -1
subtitusikan nilai y = -1 ke pers. x - 3y = 5
x - 3y = 5
x - 3(-1) = 5
x = 5 - 3
x = 2

jadi HP : {(2,-1)}

2x + y = 3. ×1. 2x + y = 3
x - 3y = 5. ×2. 2x - 6y =10
7y = -7
y = -1
2x + y = 3
2x + (-1) =3
2x -1 = 3
2x = 3 +1
2x = 4
x = 4/2
x = 2