Two Step Equations

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What is a two-step equation?

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A two-step equation is an algebraic equation that requires two operations to solve for the variable.

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How do you isolate a variable in a two-step equation?

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To isolate a variable, perform the inverse operations in reverse order: first undo addition or subtraction, then undo multiplication or division.

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x = 27

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x = 42

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x = 140

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x = 78

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x = 9

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Subtract 5 from both sides to isolate x.

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What does it mean to 'undo' an operation in algebra?

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To 'undo' an operation means to perform the inverse operation, such as using subtraction to undo addition.

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What is the inverse operation of multiplication?

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The inverse operation of multiplication is division.