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. It typically involves addition or subtraction followed by multiplication or division.

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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 eliminate the constant term (add or subtract), then eliminate the coefficient of the variable (multiply or divide).

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a = 10

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a = 5

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a = 9

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x = 5

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a = -2

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Subtract 3 from both sides to isolate the term with the variable.

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What does it mean if an equation has 'no solution'?

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An equation has 'no solution' when there is no value for the variable that can satisfy the equation, often resulting in a contradiction.

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What is the inverse operation of addition?

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The inverse operation of addition is subtraction.