Solving One Step Addition Equations

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Add 7 to both sides of the equation.

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CCSS.6.EE.B.7

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n = 42

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CCSS.6.EE.B.7

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Subtract 4 from both sides.

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CCSS.6.EE.B.7

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x = -20

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CCSS.6.EE.B.7

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x = 5

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CCSS.6.EE.B.7

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What does it mean to 'isolate the variable' in an equation?

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To get the variable alone on one side of the equation.

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CCSS.7.EE.B.4A

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What is the purpose of performing the same operation on both sides of an equation?

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To maintain the equality of the equation.

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CCSS.HSA.REI.A.1

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x = 10

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CCSS.6.EE.B.7

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x = 10

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CCSS.6.EE.B.7

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Subtract 12 from both sides.

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CCSS.6.EE.B.7