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12 - PowerPoint PPT Presentation

=?. =?. =?. =?. =?. =?. 8. 14. 20. 12. 14. 13. 15. 12. =2. =4. =1. =3. =5. =6. 8. 14. 20. 12. 14. 13. 15. 12. Lesson Objective Be able to write equations to describe problems Be able to solve equations with the unknown variable on one side

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Presentation Transcript

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Lesson Objective

Be able to write equations to describe problems

Be able to solve equations with the unknown variable on one side

Extend to look at solving equations with the unknown on both sides

Look at the cards.

Match the think of a number problem to the correct equation?

Tarsia Puzzle

Now can you find the number I was thinking of in each statement?

Methods for solving equations:

Method 1 Using inverses

I think of a number times it by 3 and add 7. The answer is 40.

Method 2 Rearranging

I think of a number times it by 3 and add 7. The answer is 40.

Harder Questions

1) 3x + 1 = x + 5 2) 2x + 2 = x +7 3) 4x + 1 = 2x + 9

4) 3x + 2 = x + 8 5) 3x + 1 = x + 4 6) 3x – 1 = x + 9

7) 2x - 1 = x + 7 8) x + 2 = 2x – 1 9) 4x – 2 = x + 9

10) 3x - 1 = x + 7 11) 3x + 1 = 5x – 2 12) 3x – 2 = 5x + 1

Ultra Hard Questions

1) 4x + 3 = 2x + 7 2) 3x + 2 = x + 7 3) 2x + 13 = 4x + 1

4) 5x – 2 = x + 8 5) 3x – 5 = x + 4 6) 2x + 10 = 4x + 9

7) x = 2x – 7 8) x + 2 = 3x – 1 9) 5x + 2 = 14 – x

10) x – 1 = 2x + 7 11) 13x + 1 = 3x + 17 12) 4x – 4 = x + 1