1 / 19

Solving Two-Step Equations

Solving Two-Step Equations. Algebra Tiles. Variable Zero Pairs. Zero Pairs. Example 1. Check our work. -5 = 2x + 1 -5 = 2(-3) + 1 -5 = -6 + 1 -5 = -5. Example 2. Let’s check our work: 3x – 2 = 4 3(2) – 2 = 4 6 – 2 = 4 4 = 4. Example 3.

Download Presentation

Solving Two-Step Equations

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Solving Two-Step Equations

  2. Algebra Tiles

  3. Variable Zero Pairs

  4. Zero Pairs

  5. Example 1

  6. Check our work -5 = 2x + 1 -5 = 2(-3) + 1 -5 = -6 + 1 -5 = -5

  7. Example 2

  8. Let’s check our work: 3x – 2 = 4 3(2) – 2 = 4 6 – 2 = 4 4 = 4

  9. Example 3

  10. Let’s check our work: 2x + 1 = 5 2(2) +1 = 5 4 +1 = 5 5 = 5

  11. Steps for solving • Get the variable term by itself. • In other words, do the addition/subtraction first. • Isolate the variable. • In other words, do the multiplication/ division last. *****HINT! Whatever you do to one side of the equation you MUST do to the other side!

  12. Example • 2x + 3 = 7 *Get the variable term alone* -3 -3 “undo” addition by subtraction 2 x = 4 *Isolate the variable* 2 2 “undo” multiplication by division x = 2

  13. Solve + 4 = 9 + 4 = 9 - 4 - 4 (Subt. 4 from both sides)  3 = 5  3 (Mult. by 3 on both sides) x = 15 = 5

  14. Try These Problems x = 7 • 3x – 5 = 16 • 12 = 13 + • 16 = 4n + 4 • – 6 = 4 y = -4 n = 3 n = 20

  15. Time to Review! • Keep the equation balanced. • Use inverse operations to “undo” • Follow the rules: • Undo Addition or Subtaction • Undo Multiplication or Division

  16. Practice Worksheet

More Related