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7.7 Transforming Formulas

7.7 Transforming Formulas. Goal: To solve for a given variable in a formula. Why would you want to solve for a formula?. Solving for a variable in your formula can give you more specific information. How to Solve Formulas….

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7.7 Transforming Formulas

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  1. 7.7 Transforming Formulas • Goal: To solve for a given variable in a formula

  2. Why would you want to solve for a formula? • Solving for a variable in your formula can give you more specific information

  3. How to Solve Formulas… • Our goal is to undo everything that is being done to the variable that we are trying to solve for by doing the opposite operation.

  4. Steps • Clear Fractions by multiplying by LCD to every term • Distribute • Collect like terms on same side of = • Undo addition and subtraction • Undo multiplication

  5. t t Example 1: Solve for r d = r • t

  6. 2• • 2 r r Example 2: Solve for h

  7. Example 3:Solve for “c”. 3k = a + b + c - a - b - a - b 3k – a - b = c

  8. Example 4: Solve for “r”:C = 2  r

  9. Example 5: Solve for “m”:E = m c2

  10. Example 6:

  11. Ex 7:

  12. Example 8: Solve for l: P=2l +2w

  13. Example 9: Solve for t: v = 3k t

  14. Ex 10: x-a=a(y-b) solve for a

  15. Assignment:Worksheet

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