What number can you subtract...
What number can you subtract half from to obtain a result of zero?Correct answers: 33
The first user who solved this task is Manguexa Wagle.
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Leather tanningIn 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) |