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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CCSS.7.EE.B.4A

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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, then the coefficient of the variable.

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CCSS.7.EE.B.4A

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x = 9

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CCSS.7.EE.B.4A

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x = 23

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CCSS.7.EE.B.4A

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x = 25

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CCSS.7.EE.B.4A

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x = 5

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CCSS.7.EE.B.4A

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x = 78

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CCSS.7.EE.B.4A

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Multiply both sides by 4 to eliminate the fraction.

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CCSS.7.EE.B.4A

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

Tags

CCSS.7.EE.B.4A

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What does it mean to perform the inverse operation?

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An inverse operation reverses the effect of the original operation, such as addition and subtraction or multiplication and division.

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CCSS.HSA.REI.A.1