Find number abc
If 9290a - 7ba9b = 2bcb4 find number abc. Multiple solutions may exist.Correct answers: 46
The first user who solved this task is Djordje Timotijevic.
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Oil heaterIn 1894, black American inventor S. Newson was issued a patent for an "oil heater or cooker" (U.S. No. 520,188). |