Unit 1 Final Review

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x = 12

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The simplified expression is 13.

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x = -10

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The simplified expression is 3.

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n = 3.

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What is the definition of a variable in mathematics?

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A variable is a symbol used to represent an unknown value in an equation or expression.

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What is the order of operations in mathematics?

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The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.

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What does it mean to simplify an expression?

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To simplify an expression means to reduce it to its simplest form by combining like terms and performing operations.

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What is a proportion in mathematics?

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A proportion is an equation that states that two ratios are equal.

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What is the definition of an equation?

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An equation is a mathematical statement that asserts the equality of two expressions.