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Which of the following is an equation?
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Is it A) three 𝑥 plus six equals negative three?
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Is it B) five 𝑥 plus five, C) 25 plus 11, or D) 𝑥 is greater than or equal to five?
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An equation is a statement that the values of two mathematical expressions are equal.
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This is indicated by the equal sign.
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The only option that contains an equal sign is option A, three 𝑥 plus six equals negative three.
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Therefore, option A must be an equation.
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Options B and C are expressions, and option D is an inequality.
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Therefore, the only option that is an equation is three 𝑥 plus six equals negative three.