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Verified answer
Mapel = MatematikaBab = Barisan dan Deret
Tentang = Barisn Aritmetika
Diketahui
U3 = 7
U5 = 19
Beda = (U5 - U3) / (5-3)
Beda = (19 - 7) / 2
Beda = 12/2
Beda = 6
Semoga membantu :)