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Is this a “ positive 5 ” or “ plus 5 ”? 5 – 2x = 14 BOTH +

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Presentation on theme: "Is this a “ positive 5 ” or “ plus 5 ”? 5 – 2x = 14 BOTH +"— Presentation transcript:

1 http://www.mathslideshows.com

2 Is this a “ positive 5 ” or “ plus 5 ”? 5 – 2x = 14 BOTH +

3 http://www.mathslideshows.com HINT: If you don’t see a negative or positive sign in front of a number it is always positive. 5 +

4 http://www.mathslideshows.com Is this a “ negative 7x ” or “ minus 7x ”? 2 – 7x = 10 BOTH

5 http://www.mathslideshows.com HINT: The sign in front of the number BELONGS TO THE NUMBER ! –7

6 http://www.mathslideshows.com I will show you 2 ways to solve this equation! Which one do you think is easier? WHY? Same answer!

7 http://www.mathslideshows.com It is easier if you move the smaller number of x’s to one side. If you move the larger number of x’s you will end up with negative x’s

8 http://www.mathslideshows.com Solve With x’s on Both Sides

9 http://www.mathslideshows.com Solve With x’s on Both Sides

10 http://www.mathslideshows.com 13 = 4(3x – 7) + 5 13 = 12x- 28 + 5 13 = 12x - 23 +23 +23 36 = 12x__ ___ 12 12 3 = x 13 = 4(3 3 – 7) +5 13 = 4(9 - 7) + 5 13 = 8 + 5 13 = 13 13 = 4(2) + 5 Solve With The Distributive Property

11 http://www.mathslideshows.com Solve With The Distributive Property

12 http://www.mathslideshows.com Solve With The Distributive Property

13 http://www.mathslideshows.com Solve With The Distributive Property

14 http://www.mathslideshows.com Solve With The Distributive Property

15 http://www.mathslideshows.com Solve With The Distributive Property

16 http://www.mathslideshows.com Solve With The Distributive Property Challenging One!

17 http://www.mathslideshows.com The End! Take out your study guide !

18 http://www.mathslideshows.com #19 1) Get rid of the parenthesis by distributing 2) Combine like terms 3) Move the smaller number of x’s to one side 4) Move all numbers to the other side 5) Get x all by itself 6) Check your answer in the original equation Circle answer. Show work in the check!

19 http://www.mathslideshows.com 5(m - 6) = 10 5m - 30 = 10 + 30 +30 5m = 40 5 5 m = 8 Get rid of parenthesis first by distributing. #20 Check in the original equation! 5(8 - 6) = 10 Do PEMDAS in the check! 5(2) = 10 10 = 10

20 http://www.mathslideshows.com 8x - 4 = 3(2x + 8) Get rid of the parenthesis. 8x - 4 = 6x+ 24 Get the variables on one side. Subtract 6x from both sides. -6x 6x and –6x cancel out 2x - 4 = 24 Add 4 to both sides. + 4 + 4 x = 14 Divide both sides by 2. 2x = 28__ __ 2 2 #21 Show your check! 8(14) - 4 = 3(2 14+8) 112 - 4 = 3(36) 108 = 108 Finish your check!

21 EXTRAS: You can use them the next day when going over homework corrections. copyright©amberpasillas2010

22 http://www.mathslideshows.com Solve With The Distributive Property Challenging One!

23 http://www.mathslideshows.com 13 = 4(3x – 5) + 9 13 = 12x - 20 + 9 13 = 12x - 11 +11 +11 24 = 12x __ ___ 12 12 2 = x # Extra 13 = 4(3 2 – 5) +9 13 = 4(6 - 5) + 9 13 = 4 + 9 13 = 13 13 = 4(1) + 9 Show work in the check!

24 http://www.mathslideshows.com If you have trouble viewing you need MathType software: To see all math formulas correctly you need to install MathType software, similar to equation editor and is available for free at Design Science website.Design Science website

25 http://www.mathslideshows.com For more information on Math Slideshows visit: http://www.mathslideshows.com/ http://www.mathslideshows.com/


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