Image: First Equation Ever
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Description: The first equation ever written, by Robert Recorde in his treatise The Whetstone of Witte, in 1557. The equation is represented, in modern terms, by 14x+15=71{\displaystyle 14x+15=71}, and its solution is x=4.
Title: First Equation Ever
Credit: http://www-groups.dcs.st-and.ac.uk/~history/Bookpages/Recorde4.jpeg
Author: Robert Recorde
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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