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Multiplying & Dividing Algebra~ Lesson 6 Remember Addition and Subtraction? Kinda the same idea…

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Presentation on theme: "Multiplying & Dividing Algebra~ Lesson 6 Remember Addition and Subtraction? Kinda the same idea…"— Presentation transcript:

1

2 Multiplying & Dividing Algebra~ Lesson 6

3 Remember Addition and Subtraction? Kinda the same idea…

4 Except now, we are working with multiplication and division. Remember… They are opposites. So they undo each other.

5 Remember… In Algebra, we have to do a little organizing before we can solve for the right answer.

6 You know, put like things together on the same side of the equation.

7 4x = 24 Imagine a dividing line through the equal sign. Remember…

8 4x = 24 Remember… Letters go on one side and numbers go on the other. L#L#

9 4x = 24 L#L# Notice that it is tied to the X by multiplication. How can you undo multiplication? DIVISION!

10 4x = 24 L#L# 4 The division undoes the multiplication on this side, so the four is cancelled out.

11 4x = 24 L#L# 4 What you do to one side of the equation, you must do to the other.

12 4x = 24 L#L# 4 What you do to one side of the equation, you must do to the other. x = 6

13 Lets try a few… 3m = = 3j 5s = 135 m = 4 13 = j s = 27

14 Now…lets undo division!

15 x = 24 Imagine a dividing line through the equal sign. Remember… 2

16 x = 24 2 Notice that it is tied to the X by division. How can you undo division? MULTIPLICATION! 2

17 x = The division undoes the multiplication on this side, so the four is cancelled out.

18 x = The division undoes the multiplication on this side, so the four is cancelled out.

19 x = The division undoes the multiplication on this side, so the four is cancelled out. x = 48

20 Lets try a few… m = = w 3 m = = w

21 Homework Time!


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