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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 • 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… • 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.
Steps • Clear Fractions by multiplying by LCD to every term • Distribute • Collect like terms on same side of = • Undo addition and subtraction • Undo multiplication
t t Example 1: Solve for r d = r • t
2• • 2 r r Example 2: Solve for h
Example 3:Solve for “c”. 3k = a + b + c - a - b - a - b 3k – a - b = c
Example 8: Solve for l: P=2l +2w
Example 9: Solve for t: v = 3k t