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subtitusikan pertama
4x - 2y = -6
4x - 2(10 -5x) = -6
4x - 20 + 10x = -6
4x + 10x = -6 + 20
14x = 14
x = 1
subtitusikan kedua
y = 10 - 5x
y = 10 -5(1)
y = 10 - 5
y = 5
Hp = { 1, 5}