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Reflexive Property of Equality

Rule

Reflexive Property of Equality

For any real number it is true that the number is equal to itself.

$a=a$

This can be used to solve equations. For example, consider the equation below. $\begin{gathered} x + 3 = 8 \end{gathered}$ The sum on the left-hand side can be interpreted as a number, meaning it has to be equal to $8.$ This implies that $x$ must be equal to $5.$