1. SOLVING EQUATIONS WITH VARIABLES ON BOTH SIDES Wednesday Sept. 9, 2015 Algebra

2. WARM UP  Solve 6(3 – 2x) = 54 2x/5 – x/2 = 40 1.4 – 0.04x = 5.20 7x + 14 – 3x = 30 1 minute speed drill – side B

3. GRADE HOMEWORK

4. OBJECTIVES  I can solve equations with variables on both sides and identify equations that are identities or have no solution.  Essential Understanding – To solve equations with variables on both sides, you can use the properties of equality and inverse operations to write a series of simpler equivalent equations

5. GETTING READY

6. SOLVING EQUATIONS WITH VARIABLES ON BOTH SIDES

7. I DO….  6x + 3 = 8x - 21

8. YOU DO….  1. -6d = d + 4  2. 2(c – 6) = 9c + 2  3. m – 5 = 3m  4. 7k – 4 = 5k + 16

9. REAL WORLD PROBLEMS

10. YOUR TURN  An office manager spent $650 on a new energy saving copier that will reduce the monthly electric bill for the office from $112 to $88. In how many months will the copier pay for itself??

11. DISTRIBUTIVE PROPERTY

12. WE DO…  4(2y+1) = 2(y-13)7(4-a) = 3(a-4)

13. IDENTITIES

14. YOU TRY…  9 + 5n = 5n – 1 9 + 5x = 7x + 9 – 2x

15. DOL  6x – 2 = x + 13 .6b + 14 = -7 – b  -2(a – 3) = 14  Construct an equation with no solution.