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3y - x = 8 (dikali 2) = 6y - 2x = 8
-3y + 2x = -1 (dikali -1) = 3y -2x = 1 -
3y = 7
y = 7:3 = 2,3
sorry kalo salah
x = 3y - 8
2 (3y - 8) - 3y = -1
6y - 16 - 3y = -1
3y - 16 = -1
3y = 15
y = 5