7.PFA.3 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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CCSS.6.EE.B.7

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What does it mean to use inverse operations?

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Inverse operations are pairs of operations that undo each other, such as addition and subtraction or multiplication and division.

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CCSS.HSA.REI.A.1

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How do you isolate a variable in an equation?

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To isolate a variable, you perform inverse operations to both sides of the equation until the variable is alone on one side.

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CCSS.6.EE.B.7

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What is the goal when solving a two-step equation?

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The goal is to find the value of the variable that makes the equation true.

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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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Multiply both sides by 4 to eliminate the fraction.

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CCSS.HSA.REI.A.1

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CCSS.7.EE.B.4A

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What does it mean to check your solution in an equation?

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Checking your solution means substituting the value back into the original equation to verify that both sides are equal.

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CCSS.8.EE.C.7B