Two-Step Equations A

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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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The first step is to multiply both sides by -5 to eliminate the fraction.

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CCSS.7.EE.B.4A

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The solution is x = -20.

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CCSS.7.EE.B.4A

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Multiply both sides by 7, then subtract -5 from both sides.

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CCSS.7.EE.B.4A

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The solution is x = -16.

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CCSS.7.EE.B.4A

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What does it mean to isolate a variable in an equation?

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Isolating a variable means to manipulate the equation so that the variable is on one side and all other terms are on the opposite side.

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Multiply both sides by 3 to eliminate the fraction.

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CCSS.7.EE.B.4A

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The solution is x = -43.

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CCSS.7.EE.B.4A

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Multiply both sides by 4, then add 8 to both sides.

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CCSS.7.EE.B.4A

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The solution is y = 56.

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CCSS.7.EE.B.4A