One-step Equations with Addition and Subtraction

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What is a one-step equation?

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A one-step equation is an algebraic equation that can be solved in a single step, typically involving addition or subtraction to isolate the variable.

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Minus 5 from both sides to isolate x.

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Plus 13 to both sides to isolate x.

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How do you isolate a variable in an equation?

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You perform the inverse operation on both sides of the equation.

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19

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-11

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-7

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What does it mean to 'isolate the variable'?

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To isolate the variable means to get the variable alone on one side of the equation.

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Subtraction.

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Addition.