What would you like to read?Search books, authors, genres, shelves, users...
Search books, authors, genres, shelves, users...Search books, authors, genres, shelves, users...
What would you like to read?Search books, authors, genres, shelves, users...
Search books, authors, genres, shelves, users...Search books, authors, genres, shelves, users...
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Robert Recorde (c. 1510 – 1558) was a Welsh physician and mathematician. He invented the equals sign (=) and also introduced the pre-existing plus (+) and minus (−) signs to English speakers in 1557.
