3/17 Lesson 6.2.5 Writing and Solving Equations

1.  Warm-up:  Factoring an expression is a skill that could be referred to as the Distributive Property in reverse.

Here is an example of factoring:

40x + 20  =  20(2x + 1)

I have taken an expression and divided it into 20 equal groups.

Here is another example:

12x - 8 =  4(3x - 2)

Now you try!  Factor the following expressions:

a)  9x + 6        b)    18x - 10        c)      -12 - 3x



2.  Lesson 6.2.5  Writing and Solving Equations

• Objectives:  
• I will write equations to model real-world situations
• I will solve equations without Algebra Tiles
• Problem 103 in pairs
• Choose one:  A or B
• Choose one:  C or D
• Super Dojo Challenge: Problem E
• 5-D Process/Equations Graphic Organizer
• Remember the objective!  We are not solving this through guess-and check
• The 5-D Process is there to help you organize your thoughts
• Search for the "key".  Then, declare the key as your variable
• Don't forget to Declare the answer

Homework:  Lesson 6.2.5 R/P #104, 105 only