**Math 6A, Lesson 5, Spring 2017, 3/19/2017**

**1. We continue working on how to construct/form linear equations to solve word problems**

The steps involved in problem solving with linear equations are:

- Step 1. Read the question carefully and identify the unknown quantity
- Step 2. Use a letter to represent the unknown quantity (e.g. x)
- Step 3. Express other quantities in terms of x
- Step 4. Construct/Form an equation based on the given information
- Step 5. Solve the equation
- Step 6. Write down the answer statement

**2. Review basic concept of “open parenthesis”**

- 2(3x+y) – 5(0.2x-0.6y) =
- -2(3x+y) + 5(0.2x-0.6y) =
- -2(3x-y) + 5(-0.2x-0.6y) =
- 2(3x-y) – 5(0.2x+0.6y) =

**3. Home Work:**

- Looking ahead: pop quiz next week on equations
- Show detailed steps for all HW problems
- Handout two pages
- Fun and challenge: Two pages are suggested. See email sent to parents to order the Math Contest books:

**Math Contests, Grades 7 & 8 (and Algebra Course 1) Vol. 6**

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**Math Contests, Grades 4, 5 & 6, Vol. 6 (School Years 2006-2007 Through 2010-2011)**

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