A mathematical statement that two expressions are equal, joined by an equals sign. Solving an equation means finding which values of its unknowns make the statement true, and the equals sign itself was invented only in 1557, well after equations had been written and solved for centuries using prose and other notations. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Origin Year1557 marks Robert Recorde's invention of the equals sign in The Whetstone of Witte, the origin of the modern written form of an equation; equations as mathematical statements, solved in prose and other notations, are centuries older, as the description notes. Connections
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Source Equation (Wikipedia)
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Sources
1. Equation (Wikipedia)
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The "=" symbol, which appears in every equation, was invented in 1557 by Robert Recorde, who considered that nothing could be more equal than parallel straight lines with the same length.
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