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karena perbedaan bilangan ganjil yang berurutan tiap bilangan adalah 2, maka :
bilangan pertama = x
bilangan kedua = x + 2
bilangan ketiga = x + 2 + 2 = x + 4
x + x + 2 + x + 4 = 69
3x + 6 = 69
3x + 6 = 69
(B)