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r = -3
Selesai.
Tolong beri bintang penuh yaa... :)
-162=-2 ((-3)^(n-1))
-162/-2= (-3)^(n-1))
81 = (-3)^(n-1))
(-3)log 81 = n-1
4 = n-1
n = 4+1 = 5
jadi jawabannya n = 5