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Verified answer
Kelas 8 MatematikaBab Barisan dan Deret Bilangan
r = U2/U1
r = 2/6
r = 1/3
S∞ = a/(1 - r)
S∞ = 6/(3/3 - 1/3)
S∞ = 6/(2/3)
S∞ = 9