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Verified answer
2y - x = 103y + 2x = 29
eliminasi
4y - 2x = 20
3y + 2x = 29
-------------------- (+)
7y = 49
y = 7
subtitusi
2y - x = 10
2(7) - x = 10
x = 14 - 10
x = 4
jadi HP = {(4 , 7)}