Two Step Equations

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What is a two-step equation?

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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 divide or multiply to solve for the variable.

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CCSS.7.EE.B.4A

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x = 7

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CCSS.6.EE.B.7

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x = 3

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CCSS.6.EE.B.7

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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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What does it mean to 'balance' an equation?

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Balancing an equation means performing the same operation on both sides to maintain equality.

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CCSS.8.EE.C.7B

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x = 9

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CCSS.7.EE.B.4A

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x = 15

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CCSS.7.EE.B.4A

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Substitute the solution back into the original equation: 10 + 7 = 10.

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CCSS.6.EE.B.5