Download presentation

Published byNoe Atkin Modified over 4 years ago

1
**Do Now 10/27/09 Take out HW from last night. Copy HW in your planner.**

Punchline worksheets #43 & #44 Copy HW in your planner. Text p. 127, #12-18 even, #22-30 evens, #33 Quiz sections 3.1 & 3.2 Thursday In your notebook, simplify the expressions below. -3(x + 4) -2a – 3 + 4a + 8 -4a – 3(a + 8)

2
**“Books Never Written” “Did You Hear About…” JUSTIN HALE BUCK L UPSON**

Homework Punchline worksheets #43-44 “Books Never Written” JUSTIN HALE BUCK L UPSON OWEN E LEVIN “Did You Hear About…” THE GUY WHO INVESTED IN FEATHERS BECAUSE HE HEARD THAT THE STOCK MARKET WAS GOING DOWN

3
Objective SWBAT solve multi-step equations using algebra

4
**-3(x + 4) = -3(x) + (-3)(4) = -3x + (-12) -2a – 3 + 4a + 8 -2a + 4a**

Remember this… -3(x + 4) = -3(x) + (-3)(4) = -3x + (-12) -2a – 3 + 4a + 8 -2a + 4a + (-3) + 8 = 2a + 5

5
**-4a – 3(a + 8) -4a +(-3)(a + 8) -4a + (-3a) + (-24) -7a + (-24)**

Remember this… -4a – 3(a + 8) -4a +(-3)(a + 8) -4a + (-3a) + (-24) -7a + (-24)

6
**Equation- mathematical sentence with an equal sign Like a scale,**

both sides must be EQUAL in order to be balanced.

7
**Section 3.2 “Solving a Multi-Step Equation”**

How can you get the “unknown” by itself? 8x - 3x - 10 = 20 Solving Multi-Step Equations STEP 1- STEP 2- Combine like terms. STEP 3- “Undo” addition and/or subtraction. STEP 4- “Undo” multiplication and/or division. STEP 5- Solve for the variable. STEP 6- Check your work.

8
**Solving Multi-Step Equations…**

Isolate the variable! Get ‘x’ by itself. 8x – 3x – 10 = 20 5x – 10 = 20 Combine like terms. 5x – = Add 10 to each side. 5x = 30 Simplify. = 30 5 5x Divide each side by 5. x = 6 Simplify.

9
**8x – 3x – 10 = 20 x = 6 8(6) – 3(6) – 10 = 20 Check Your Work!**

8(6) – 3(6) – 10 = 20 Are both sides equal?

10
**Solving a Multi-Step Equation**

Solving Multi-Step Equations STEP 1 - Distributive Property STEP 2- Combine like terms. STEP 3- “Undo” addition and/or subtraction. STEP 4- “Undo” multiplication and/or division. STEP 5- Solve for the variable. STEP 6- Check your work.

11
**Solving Multi-Step Equations Using the Distributive Property…**

6x – 2(x – 5) = 46 Distributive property. 6x – 2x + 10 = 46 Combine like terms. 4x + 10 = 46 Subtract 10 from each side. 4x + 10 – 10 = 46 – 10 Simplify. 4x = 36 Divide each side by 4. = 4x 4 36 Simplify. x = 9

12
**x = 9 6(9) – 2(9 – 5) = 46 Check Your Work! Are both sides equal?**

6x – 2(x – 5) = 46 x = 9 6(9) – 2(9 – 5) = 46 Are both sides equal?

13
**Guided Practice 2) p – 17p – 6 = -38 1) 6x – 2x + 11 = -5**

14
**Guided Practice 6x – 2(x + 11) = -6 6x + (-2x) + (-22) = -6**

15
**Guided Practice 27 = 3c – 3(6 – 2c) 27 = 3c + (-18) + 6c**

16
Homework Text p. 127, #12-18 even, #22-30 evens, #33

Similar presentations

Presentation is loading. Please wait....

OK

Columbus State Community College

Columbus State Community College

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google