Bell Ringer (#1) - | -2 + 4 | (#2) 3/6 + 1/12 (#3) -4( m – 2 ) (#1) - | -2 + 4 | (#2) 3/6 + 1/12 (#3) -4( m – 2 ) (#4) Identify the like terms: 4x + 2 + 3x + 1

Don’t forget!!!! Quiz tomorrow on 4.1 and 4.2

Continuing 4.2….. R drive > Key > Week 5 > Monday > 4.2 PowerPoint Continued File > Save As > P drive > math > new folder > week 5 > Monday > 4.2 PowerPoint Continued

Example 2

Identify the terms, like terms, coefficients, and constants in the expression: 4x – x + 2y – 3 Terms: Like Terms: Coefficients: Constants:

New Vocabulary Simplest Form: An algebraic expression with no like terms and no parentheses Simplifying the Expression: Using the Distributive Property to combine like terms

Example 3 4x + 6 + 2x 6y – 3(x – 2y) 5n + 2 – n – 6 = 12y – 3x = 6y + (-3x) +6y = 12y + (-3x) 5n + 2 – n – 6 = 12y – 3x = 5n + 2 + (-n) + (-6) = 5n + (-n) + 2 + (-6) = 4n + (-4) = 4n - 4

Your Turn 3A. 4x + 6 – 3x 3B. 2m + 3 – 7m – 4 3C. 4(q + 8p) + p

Simplify each expression. 8n + 4 + 4n 6x + 4 – 5x – 7 Y – 2(x – 3y )

Example 4

Fun with Word Problems  Mato and Lola both collect stamps. Lola has 16 more stamps in her collection than Maato has. Write an expression in simplest form that represents the total number of stamps in both collections.

One More Example…. Suppose you and a friend worked in the school store last week. You worked 4 hours more than your friend. Write an expression in simplest form that represents the total number of hours you both worked.

Class Work You may ask me for help, use your notes, as well as your calculator to answer these questions. When you are finished, turn in to me and begin working on tonight’s homework.

Homework Section 4.2 #15-45

Homework Section 4.2 #15 - 45

Homework Section 4.2 # 15 - 45 #45. Write an expression to represent each model. Then simplify the expression and write your answer.