Equivalent Expressions

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What is an equivalent expression?

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An equivalent expression is an expression that has the same value as another expression for all values of the variable(s) involved.

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CCSS.6.EE.A.4

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15

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CCSS.6.EE.A.2C

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What is a variable in algebra?

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A variable is a symbol, usually a letter, that stands for a number.

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CCSS.6.EE.A.2B

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Translate the phrase '8 less than the product of 4 and a number' into an algebraic expression using variable m.

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4m - 8

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CCSS.6.EE.A.2A

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18x + 3y

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CCSS.7.EE.A.1

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If Abby has 10 fewer baseball cards than Neal, and n represents the number of baseball cards Neal has, what expression represents the number of baseball cards Abby has?

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n - 10

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CCSS.6.EE.B.6

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What is a coefficient in an algebraic expression?

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A coefficient is a numerical factor in a term of an algebraic expression.

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CCSS.6.EE.A.2B

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What does it mean to simplify an expression?

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To simplify an expression means to reduce it to its simplest form by combining like terms and eliminating unnecessary parentheses.

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CCSS.7.EE.A.1

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6

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CCSS.6.EE.A.2C

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What is the difference between an expression and an equation?

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An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.