7X Equations Review

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What is an equation?

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An equation is a mathematical statement that asserts the equality of two expressions, typically containing variables.

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CCSS.6.EE.A.2C

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What does it mean to solve an equation?

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To solve an equation means to find the value(s) of the variable(s) that make the equation true.

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CCSS.8.EE.C.7B

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What is a variable in mathematics?

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A variable is a symbol, often represented by a letter, that stands for an unknown value in an equation.

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CCSS.6.EE.A.2B

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Subtract 2 from both sides to isolate the term with the variable.

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CCSS.7.EE.B.4A

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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 get the variable alone on one side of the equation.

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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, then add 3 to isolate x.

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CCSS.7.EE.B.4A

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CCSS.7.EE.B.4A

Front

How do you check if your solution to an equation is correct?

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Substitute the solution back into the original equation to see if both sides are equal.

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CCSS.6.EE.B.5

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CCSS.7.EE.B.4A