Find number abc
If cc48c - ca3bb = 8a23 find number abc. Multiple solutions may exist.Correct answers: 28
The first user who solved this task is Nasrin 24 T.
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Lincoln's patentIn 1849, Abraham Lincoln was issued a patent for "buoying boats over shoals" (No. 6,469). He was the first American president to receive a patent. His idea utilized inflated cylinders to float grounded vessels through shallow water. Lincoln had worked as a deck-hand on a Mississippi flat-boat. |