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The "=" symbol that is now universally accepted by mathematics for equality was first recorded by Welsh mathematician Robert Recorde in The Whetstone of Witte (1557).
The original form of the symbol was much wider than the present form. In his book Recorde explains his design of the "Gemowe lines" (meaning twin lines, from the Latin gemini):
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Is 10 less than 10?
No, ten is equal to ten. If you see a less than/equal to sign, the statement is true.A less than/equal to sign has a less than sign on top of an equal sign.
How do you spell equal sign?
inequality sign
What is an equation called that doesn't have an equal sign?
If it doesn't have an equal sign, then it's not an equation.
What do expressions which use numbers or other symbols and an equal sign mean?
In mathematics, such expressions indicate that the value of the expression to the left of the equal sign has the same value as the expression to the right of the equal sign. In some cases, it can also be interpreted to mean that the expression on one side of the equal sign can be used in place of the expression on the other side of the equal sign (say in manipulating algebraic expressions). In computer languages, the equal sign is sometimes also used to indicate that the value of the expression to the right of the equal sign is to be transferred to the location indicated by the expression to the left of the equal sign. The expression to the left of the equal sign is usually a single variable that represents a memory location.
Difference between expression and equation?
An expression has no equal sign whereas an equation does have an equal sign
