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**Lesson 2.3: Simplifying Variable Expressions**

How do you simplify variable expressions?

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Key Vocabulary Terms: the parts of the expression that are added together Coefficient: the number part of the term with a variable Constant: the number that does not have a variable

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**Identifying parts of an expression**

y + 8 – 5y – 3 Terms: Like Terms: Coefficients: Constants:

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**Simplifying an Expression**

4n – 7 – n + 9 2(x – 4) + 9x + 1

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**Simplifying an Expression**

3k – 8 (k + 2) 4a – (4a – 3)

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**Writing and Simplifying an Expression**

During your workout, you spend a total of 45 minutes jogging and swimming. You burn 14 calories per minute when jogging and 8 calories per minute when swimming. cpmj · jt + cpms · st

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**Simplify the Expression**

10x x 4y + 23 – y – 6 -19 – 11a + a + 16 4(d + 3) + 7d

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**Simplify the Expression**

p – 5 (2 – 3p) + 1 3 (q + 4) + 4q + 1 -w + 4 – (3w -13)

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