Which of the following is an equation?

Prepare for your Leaving Certificate Mathematics exam with a comprehensive practice test featuring key definitions. Use flashcards, multiple choice questions, and detailed explanations to ensure success and mastery of fundamental math concepts.

Multiple Choice

Which of the following is an equation?

Explanation:
An equation is a statement that two expressions are equal, shown with an equals sign. The item with an equals sign asserts that 7x is equal to 21, which creates a relationship that can be solved for x (giving x = 3). The other options are just expressions in x or numbers and do not state a equality between two sides, so they are not equations.

An equation is a statement that two expressions are equal, shown with an equals sign. The item with an equals sign asserts that 7x is equal to 21, which creates a relationship that can be solved for x (giving x = 3). The other options are just expressions in x or numbers and do not state a equality between two sides, so they are not equations.

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