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Verified answer
Bab Barisan dan DeretMatematika SMP Kelas VIII
Aritmatika
b = (U13 - U7) / (13 - 7)
= (53 - 29) / 6
= 24/6
= 4
a = U7 - 6b
= 29 - 6 x 4
= 29 - 24
= 5
U25 = U13 + 12 x b
= 53 + 12 x 4
= 53 + 48
= 101