sistem persamaan 5x - 2y = 7 dan x - 3y = 4, berapa himpunan penyelesaiannya !

SPLDV

5x - 2y = 7
5(x - 3y) = 5 × 4
Kurangkan
-2y - (-15y) = 7 - 20
13y = -13
y = -1

5x - 2y = 7
5x + 2 = 7
5x = 5
x = 1

HP = {(1,-1)}