1. 1-21-11  Bellwork #40  HW, red pen, pencil, book on desk.

2. Multi-Step equations with fractions and decimals Lesson 7-3 p.345

3. Multi-step equations  We have added to the level of difficulty by solving equations with 2 steps, by combining like terms first, and by using the distributive property.  Now we increase the difficulty again by solving equations with fractions and decimals.

4. Example  For example: Our steps are the same in this problem. First we add six to both sides, then we multiply both sides by 3/2 and then solve. Let’s try it.

5. Let’s try +6

6. Another example  Sometimes we have to distribute the fraction like this:

7. Try This  1.2n + 3.4 = 10  (a + 6) = 2

8. Try This  1.2n + 3.4 = 10n = 5.5  (a + 6) = 2

9. Try This  1.2n + 3.4 = 10 n = 5.5  (a + 6) = 2a = -5/2

10. Another example First add 8 to both sides Next multiply both sides by 2 (2) Subtract 14 from both sides and solve. +8 -14 N = 22

11. Try This

12. X = 38

13. Try This X = -38 R = 97

14. Clear the equation of fractions  Multiply each side by the LCM to get rid of the fraction or fractions.  Study example #3 on p.346

15. Agenda 1-21-10  PA#4  P.348 #14-22

16. 1-24-11  Please start Bellwork Quiz  HW, red pen, pencil on desk.

17. Agenda 1-24-11  PA#5  Workbook pages: p.57 #5-17 odd, p. 58 #1-13 odd, and p.59 #5-15 odd Show work in spiral notebook  Quiz tomorrow on Lessons 7-1, 7-2, and 7-3.