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Find number abc

If a7c9c + bacb7 = 939b1 find number abc. Multiple solutions may exist.

Correct answers: 25

The first user who solved this task is Nasrin 24 T.

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In 1709, first known ascent in a hot-air balloon was made in Portugal by Father Bartolomeu de Gusmão - indoors - as a demonstration before the Portuguese court.«*

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