1. Section 4.31 a Subtract using fraction notation. b Use with fraction notation to write a true sentence. c Solve equations of the type x + a = b and a + x = b where a and b may be fractions. d Solve applied problems involving subtraction with fraction notation. Section 4.3 Subtraction, Order and Applications Objectives

2. TO SUBTRACT WHEN DENOMINATORS ARE THE SAME a) subtract the numerators b) keep the denominators the same c) simplify, if possible. GET IT? Section 4.32

3. 3 To subtract when denominators are different a) Find the least common denominator (LCD). b) Convert the fractions to the LCD. c) Subtract the numerators, keeping the same denominator. d) Simplify, if possible.

4. Section 4.34 To determine which of two number is greater when there is a common denominator, compare the numerators: When denominators are different, we cannot compare numerators. First find the LCD, convert the fractions, then compare.

5. Section 4.35

6. 6 Application Example Miquel has run for 2/5 of a mile and will stop when he has run 7/8 of a mile. How much further does he have to go? Use 4 step approach.

7. Section 4.37 Homework: Problems 25, 33 Copy the problem. Work top down. Problems 49 Convert the fractions to the LCD, insert the inequality sign. Problems 51, 53, 55 Solve in a top down manner. Problems 57, 59, 61, 63 Use the 4 step approach.