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Verified answer
5x - 2y = 9 |×3| 15x - 6y = 27x - 6y = 15 |×1| x - 6y = 15
------------------------- (-)
14x = 12
x = 6/7
subtitusikan x = 6/7 ke pers. x - 6y = 15
x - 6y = 15
6/7 - 6y = 15
6y = 6/7 - 15
6y = 6/7 - 105/7
6y = -99/7
y = -99/42
y = -33/14
HP : {(-33/14, 6/7)}