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Find number abc

If 7b458 - ab8cc = ba58 find number abc. Multiple solutions may exist.

Correct answers: 50

The first user who solved this task is Thinh Ddh.

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Groucho Marx (1890-1977)

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Leather tanning

In 1884, the first U.S. patents for tanning hides and skins through the action of a metallic salt were issued to Augustus Schultz of New York City. His invention of a chrome tanning process enabled leather to be tanned thinner and stronger than by vegetable tanning. (Nos. 291,784 and -5)

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