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Verified answer
DERET ARITMATIKAnilai a = -4
Nilai b = 3 - (-4) = 7
x merupakan suku ke 5, maka nilainya :
U5 = a + (n-1)b
U5 = -4 + (5-1)(7)
U5 = -4 + 4(7)
U5 = -4 + 28
U5 = 24 ✔