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Verified answer
Materi : Pertidaksamaan MutlakPembahasan :
|7y - 12| > 9
(7y - 12)² > 9²
(7y - 12)² - 9² > 0
(7y - 12 + 9)(7y - 12 - 9) > 0
(7y - 3)(7y - 21) > 0
Hp : {y < 3/7 atau y > 3}