Intro to equations (article) | Khan Academy
https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-intro-equations/a/introduction-to-equations
WEBAn equation is a statement that two expressions are equal. For example, the expression 5 + 3 is equal to the expression 6 + 2 (because they both equal 8 ), so we can write the following equation: 5 + 3 = 6 + 2. All equations have an equal sign ( = ). The = sign is not an operator like addition ( + ) or subtraction ( − ) symbols.
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