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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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. First, eliminate any constant term by adding or subtracting, then eliminate the coefficient by multiplying or dividing.

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CCSS.7.EE.B.4A

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CCSS.6.EE.B.7

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CCSS.7.EE.B.4A

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CCSS.7.EE.B.4A

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CCSS.7.EE.B.4A

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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 'check your solution' in an equation?

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To check your solution, substitute the value of the variable back into the original equation to verify that both sides are equal.

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CCSS.8.EE.C.7B

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What is the inverse operation of addition?

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The inverse operation of addition is subtraction.

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CCSS.HSA.REI.A.1