Tolong bantu soal ini pakai metode Subtitusi... 2x - 3y = 16 -5x + y = -27

-5x + y = -27
-15x + 3y = -81
3y = 15x - 81

subtitusikan 3y ke 2x - 3y = 16
2x - 3y = 16
2x - (15x - 81) = 16
2x - 15x + 81 = 16
-13x = 16 - 81
-13x = - 65
x = 65/13
x = 5

subtitusikan x ke -5x + y = -27
-5x + y = -27
-5(5) + y = -27
-25 + y = -27
y = -27 + 25
y = -2

HP : {(5,-2)}