Download presentation

Presentation is loading. Please wait.

Published byAryan Tippin Modified over 3 years ago

1
Do Now 10/30/09 Copy HW in your planner. Copy HW in your planner. –Text p. 134, #12-28 evens & #34 & #36 Did you turn in POTW#8?

2
Objective SWBAT solve equations with variables on both sides SWBAT solve equations with variables on both sides

3
Equation- mathematical sentence with an equal sign mathematical sentence with an equal sign Like a scale, both sides must be EQUAL in order to be balanced.

4
Section 3.3 “Solving Equations with Variables on Both Sides” How can you get the “unknown” by itself? How can you get the “unknown” by itself? Solving Equations with Variables on Both Sides STEP 1- Use distributive property and combine like terms. STEP 2- Collect variables on one side of the equation. 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. 7 - 8x = 4x – 17

5
7 – 8x = 4x – 17 + 8x 12 7 = 12x – 17 7 = 12x – 17 To get all the ‘x’ variables on one side “add 8x.” To get the “12x” by itself “add 17” to both sides. +17 +17 24 = 12x 24 = 12x To get the ‘x’ by itself “divide by 12” to both sides. itself “divide by 12” to both sides. + 8x 12 2 = x 2 = x

6
Check Your Work! x = 2 7 – 8(2) = 4(2) – 17 Are both sides equal? 7 – 8x = 4x – 17

7
1) 6x + 11 = 2x – 5 1) 6x + 11 = 2x – 5 2) -17p – 6 = -38 – p 2) -17p – 6 = -38 – p 4x + 11 = -5 4x = -16 x = -4 -16p – 6 = -38 -16p – 6 = -38 -16p = -32 -16p = -32 p = 2 p = 2 Practice

8
Isolate the variable! Get ‘x’ by itself. Solving Equations with Variables on Both Sides… 9x – 5 = 4x + 15 5x – 5 = 15 5x = 20 x = 4 Write original equation. Distributive property Subtract 4x from each side. Add 5 to each side. Divide each side by 5. 9x – 5 = 2(2x + 7.5)

9
Check Your Work! = 4 x = 4 Are both sides equal? 9x – 5 = 2 (2x + 7.5) 9(4) – 5 = 2 (2(4) + 7.5)

10
Isolate the variable! Get ‘x’ by itself. Solving Equations with Variables on Both Sides…If Possible 2 – 15n +15n = -15n +15n + 10 2 – 15n +15n = -15n +15n + 10 2 = 10 No Solution 2 – 15n = 5(-3n +2) 2 – 15n = -15n + 10 2x + 10 = 2x + 10 2x + 10 = 2x + 10 All Numbers 3x +10 – x = 2(x +5) 2x + 10 = 2(x+5)

11
4 + 2x + 8 = 2(x + 6) 4 + 2x + 8 = 2(x + 6) 7p + 6 – 3p = -38 + 4p 2x + 12 = 2(x + 6) 2x + 12 = 2x + 12 All numbers 4p + 6 = -38 + 4p 4p + 6 = -38 + 4p 6 ≠ -38 6 ≠ -38 No solution No solution Guided Practice

12
Homework Text p. 134, #12-28 evens & #34 & #36

Similar presentations

OK

Do Now 10/31/13 Take out HW from last night. Take out HW from last night. Punchline worksheet #43 Punchline worksheet #43 Copy HW in your planner. Copy.

Do Now 10/31/13 Take out HW from last night. Take out HW from last night. Punchline worksheet #43 Punchline worksheet #43 Copy HW in your planner. Copy.

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on carburetors Ppt on network switching on and off on htc Ppt on assyrian and persian empires Ppt on role of computer in different fields Ppt on water activity center Ppt on operant conditioning Ppt on tata trucks Ppt on purchase order Free download ppt on solar water heating system Ppt on water softening techniques to reduce