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7/8(n) - 17 = 3/5(n + 1)
7n/8 - 17 = (3n + 3)/5
(7n - 136)/8 = (3n + 3)/5
35n - 680 = 24n + 24
11n = 704
n = 64
Suma de cifras del menor numero = n = 64 = 6 + 4 = 10