1. Multi-Step equations with fractions and decimals

2. 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.

3. 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.

4. Let’s try +6 +6

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

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

7. Try This
1.2n = 10 n = 5.5
(a + 6) = 2

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

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

10. Try This

11. Try This
X = 38

12. Try This
X = -38
R = 97

13. 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

14. Agenda
PA#4
P.348 #14-22

15. Please start Bellwork Quiz HW, red pen, pencil on desk.
Please start Bellwork Quiz
HW, red pen, pencil on desk.

16. Agenda 1-24-11 PA#5 Workbook pages: Show work in spiral notebook
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.