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By definition, what is an equation in algebra?
AA number, a variable, or a combination of them
BTwo expressions connected by an equal sign
CA grouping symbol used to separate terms
DAny expression that contains a variable
Answer & Solution
Correct answer: B. Two expressions connected by an equal sign
1. The definition requires two expressions, not just one.
2. Those two expressions must be joined together by an equal sign.
3. Without that equal sign linking two expressions, the result is only an expression, not an equation.
_Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 1 "Foundations", section 1.2 Use the Language of Algebra_
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