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1/n = 10 - 1
1/n = 9
1 = 9n
1/9 = n
semoga membantu .
(1+1/2) = 3/2
(3/2)(4/3)(5/4)....(n/n-1)(n+1/n) = 10
karena bentuk perkalian, antar penyebut dan pembilang berurutan saling menghilangkan. contoh : 3/2 4/3 ----> 4/3 (3 y hilang atau menjadi 1)
(n+1)/2 = 10
n+1 = 20
n = 19