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b = U5 - U2 / 5 - 2
b = 34 - 46 / 3
b = -12 / 3
b = -4
Mencari suku pertama (a)
U2 = a + (n-1) x b
46 = a + (2-1) x -4
46 = a + (-4)
a = 46 + 4 = 50
Suku ke 25 (U25)
= a + (n-1) x b
= 50 + (25-1) x -4
= 50 +(24 x -4)
= 50 - 96
= -46