subtitusi 4x-y=3dan 2/3x+5=-1

4x - y = 3
2/3x + 5y = -1

4x - y = 3
4x + 30y = -6
-31y = 9
y = -0.29

60x - 15y = 45
2x + 15y = -3
62x = 42
x = 0.68

sorry jika salah, semoga membantu