Objective the student will be able to
Download
1 / 12

Objective The student will be able to: - PowerPoint PPT Presentation


  • 71 Views
  • Updated On :

Objective The student will be able to:. solve equations using addition and subtraction. Designed by Skip Tyler, Varina High School. r + 16. =. -7. 1) Solve r + 16 = -7. Think of this equation as a balance scale. Whatever you do to one side has to be done to the other to keep it balanced!.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Objective The student will be able to:' - kendis


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Objective the student will be able to
ObjectiveThe student will be able to:

solve equations using addition and subtraction.

Designed by Skip Tyler, Varina High School


1 solve r 16 7

r + 16

=

-7

1) Solve r + 16 = -7

Think of this equation as a balance scale.

Whatever you do to one side has to be done to the other to keep it balanced!


1 solve r 16 71
1) Solve r + 16 = -7

To solve, you must get the variable by itself.

What number is on the same side as r?

16

To get r by itself, we must undo the “add 16”. What is the opposite of addition?

Subtract 16


1 solve r 16 72
1) Solve r + 16 = -7

- 16 -16

r = -23

-23 + 16 = -7

  • Draw “the river” to separate the equation into 2 sides

  • Subtract 16 from both sides

  • Simplify vertically

  • Check your answer by substituting your answer back into the problem


2 solve x 2 3 get the variable by itself what is your first step

Answer Now

2) Solve x + 2 = -3Get the variable by itself. What is your first step?

  • Add 2 to both sides

  • Subtract 2 from both sides

  • Add 3 to both sides

  • Subtract 3 from both sides


2 solve x 2 3
2) Solve x + 2 = -3

- 2 - 2

x = -5

-5 + 2 = -3

  • Draw “the river” to separate the equation into 2 sides

  • Subtract 2 from both sides

  • Simplify vertically

  • Check your answer by substituting your answer back into the problem

On homework and tests, be sure to check your work!!

There is no reason why you should miss a problem!


3 solve 8 m 3

Answer Now

3) Solve 8 = m - 3

  • m = 5

  • m = 11

  • m = 24

  • m = 8/3


3 solve 8 m 31
3) Solve 8 = m - 3

+ 3 + 3

11= m

8 = 11 - 3

  • Draw “the river” to separate the equation into 2 sides

  • Add 3 to both sides

  • Simplify vertically

  • Check your answer by substituting your answer back into the problem


When solving equations we want to eliminate double signs
When solving equations, we want to eliminate double signs.

y + (-3) = 8

is rewritten as

y – 3 = 8

p – (-5) = 6

is rewritten as

p + 5 = 6

As a general rule, replace “+ (- )” with “–” and “– (- )” with “+”. This will make things less confusing in the future!


4 solve y 3 7
4) Solve y + (-3) = 7

y – 3 = 7

+ 3 +3

y = 10

10 + (-3) = 7

  • Draw “the river” to separate the equation into 2 sides

  • Eliminate the double sign

  • Add 3 to both sides

  • Simplify vertically

  • Check your answer by substituting your answer back into the problem


5 solve x 2 1

-x + 2 = 1

- 2 - 2

-x = -1

x = 1

-(1) + 2 = 1

5) Solve. -x - (-2) = 1


Solve y 3 7

Answer Now

Solve -y – (-3) = 7

  • y = 10

  • y = 4

  • y = -10

  • y = -4


ad