Solving Equations

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Subtract 11 from both sides.

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x = 9.

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x = 4.

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What does the inequality x ≥ 9 represent on a number line?

Back

All numbers greater than or equal to 9.

Front

What is the purpose of isolating the variable in an equation?

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To find the value of the variable that makes the equation true.

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Back

Divide both sides by -3.

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What is the definition of an equation?

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A mathematical statement that asserts the equality of two expressions.

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What does it mean to solve an equation?

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To find the value(s) of the variable(s) that make the equation true.

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Back

Subtract 5 from both sides.

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x = 2.