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4x - 2y = y
2x - y = 2
4x - 2y - y = 0
2x - y = 2 |kali 2| 4x - 2y = 4
4x - 3y = 0 |kali 1| 4x - 3y = 0
y = 4
masukkan nilai y-nya ke salah satu persamaan :
2x - 4 = 2
2x = 2 + 4
2x/2 = 6/2
x = 3
jadi himpunan penyelesaiannya adalah {3 , 4}
Semoga membantu :)