Which of the following is an equation?

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Prepare for the Praxis Elementary Education Mathematics Test. Engage with flashcards and multiple choice questions, each with hints and explanations. Enhance your chances for exam success!

Multiple Choice

Which of the following is an equation?

Explanation:
An equation is a statement of equality between two expressions, linked by an equals sign. In these options, only the one that shows something equals something else does that—3x + 4 = 7 asserts that the left side and the right side have the same value. The other options are just expressions: they build a quantity from x and numbers but don’t claim that two sides are equal. If you were to solve the equation, you’d find x by isolating it (subtract 4 from both sides to get 3x = 3, then divide by 3 to get x = 1).

An equation is a statement of equality between two expressions, linked by an equals sign. In these options, only the one that shows something equals something else does that—3x + 4 = 7 asserts that the left side and the right side have the same value. The other options are just expressions: they build a quantity from x and numbers but don’t claim that two sides are equal. If you were to solve the equation, you’d find x by isolating it (subtract 4 from both sides to get 3x = 3, then divide by 3 to get x = 1).

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