1. 5x + 3x + 2 = 20 Bellwork #1 of 2 a.) combine the x terms
b.) subtract 2 from both sides
c.) divide both sides by 8
What did you end up with???
x = 9/4

2. 2(x + 3) = 25 Bellwork #2 of 2 a.) use the distributive property
b.) subtract 6 from both sides
c.) divide both sides by 2
What did you end up with???
x = 19/2

3. Bellwork Find the BFS
Subtract 2x
1.) 3x + 6 = 2x -7
2.) 8x = 64
3.) 3x + 5x = 17
4.) 5x + 6 = 7
5.) -2x + 6 = -x
6.) 3x + 6 +x = 5
Divide 8
CLT
Subtract 6
Add 2x
CLT

4. Solve the following Equations Show your work
5.) 10x = 100
x = 10
6.) 256 = 16c
16 = c

5. Solve the following Equations Show your work
7.) 1/2x = -40
x = -80
8.) 3/4L = 75
L = 100
9.) -6x = -36
x = 6
10.) x =
x = 8
11.) c =
c = 105

6. 5x + 3x + 2 = 20 Bellwork #1 of 2 a.) combine the x terms
b.) subtract 2 from both sides
c.) divide both sides by 8
What did you end up with???

7. 2(x + 3) = 25 Bellwork #2 of 2 a.) use the distributive property
b.) subtract 6 from both sides
c.) divide both sides by 2
What did you end up with???

8. 5x + 3x + 2 = 20 Bellwork #1 of 2 a.) combine the x terms
b.) subtract 2 from both sides
c.) divide both sides by 8
What did you end up with???
x = 9/4

9. 2(x + 3) = 25 Bellwork #2 of 2 a.) use the distributive property
b.) subtract 6 from both sides
c.) divide both sides by 2
What did you end up with???
x = 19/2

10. To apply the 4 steps for solving equations to actual problems.
Today’s Objective
To apply the 4 steps for solving equations to actual problems.
Get out your 4 steps. They are in your notes!!!

11. 4 steps for solving an equation
1.) Simplify each side of the equation
2.) Get the Variables together first
3.) Get the Whole Numbers together
4.) Get the variable by Itself

12. 1.)Solve: 3x - 7 = 2x + 5
3x - 7 = 2x + 5
3x-2x - 7 = 2x -2x+ 5
x - 7 = 5
x = 5 + 7
x = 12

13. 1.) Check: 3x - 7 = 2x + 5
3x - 7 = 2x + 5
3(12) - 7 = 2(12) + 5 =
29 = 29
True

14. 2.) Solve: 3 + a = -2
3 + a = -2
a =
a = - 5

15. 2.) Check: 3 + a = -2
3 + a = -2
= -2
-2 = -2
True

16. 3.)Solve: 5x + 3(x + 4) = 28
5x + 3(x + 4) = 28
5x + 3x + 12 = 28
8x + 12 = 28
8x =
8x = 16
8x/8 = 16/8
x = 2

17. 5x + 3(x + 4) = 28 5(2) + 3(2 + 4) = 28 10 + 3(6) = 28 10 + 18 = 28
3.)Check: 5x + 3(x + 4) = 28
5x + 3(x + 4) = 28
5(2) + 3(2 + 4) = 28
(6) = 28
= 28
28 = 28
True

18. Now you Solve and Check the following
6x + 5 = 7x - 3
6x - 6x + 5 = 7x - 6x -3
5 = x - 3
5 + 3 = x
8 = x

19. 48 + 5 = 56 - 3 53 = 53 Check: 6x + 5 = 7x - 3 6 (8) + 5 = 7(8) - 3
True

20. Now you Solve and Check the following
8 - 5x = 2 - 6x
8 - 5x + 6x = 2 -6x+ 6x
8 +x = 2
x = 2 - 8
x = -6

21. 8 - 5(-6) = 2 - 6(-6) 8 + 30 = 2 + 36 38 = 38 Check: 8 - 5x = 2 - 6x
True

22. classwork
With a partner, answer the questions on “Communicating about Algebra” on the bottom of page 131.

23. classwork You must use a separate sheet of paper for worksheet 3-2!
Do worksheet 3-2 (1 -24)
homework
page 132 (5-25 ) (Show your work)