Solving 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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Multiply both sides by 10 to eliminate the fraction.

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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 opposite operation, such as adding to undo subtraction.

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How do you check your solution for a two-step equation?

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Substitute the solution back into the original equation to see if both sides are equal.