Chapter 5.3 Simple Fractional Equations
Chapter 5.4 Forming Linear Equations to Solve Problems
1. Fractional equation: when the variable of an equation is in the denominations of a term, the equation is called fractional equation
6 /(x – 2) = 3
1/(x + 3) = 2/x
Note: it is important to check the solutions, that they can’t be those values that make a denominator of the original equation zero.
2. Constructing/Forming Linear Equations to Solve Problems
Two pages handout of teaching material. 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
3. 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) =
4.Homework:
- Handout
- Three pages
- Workbook:
- Page 30: 15, 16, 17, 18, 19, 20
