Solving 2-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 the reverse order of how they are applied.

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CCSS.7.EE.B.4A

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g = 8

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CCSS.7.EE.B.4A

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x = -4

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CCSS.7.EE.B.4A

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x = 3

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CCSS.6.EE.B.7

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a = 6

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CCSS.7.EE.B.4A

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m = 100

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CCSS.7.EE.B.4A

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Subtract 5 from both sides to isolate x.

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CCSS.6.EE.B.7

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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 (e.g., addition and subtraction are inverses).

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CCSS.HSA.REI.A.1

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x = 3

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CCSS.6.EE.B.7