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Published byDustin Blissett Modified over 2 years ago

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Solving Equations for a Specific Variable

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When solving for a specific variable, follow the same rules as when you are solving “regular” equations. Begin by identifying the variable you are solving for. Then, SIMPLIFY the equation. Remember – get rid of fractions, parentheses or like terms. Next, ISOLATE that variable by “undoing” the operations around that variable. Get all of the same variables on the same side of the equal sign. Then, SOLVE for the variable.

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Like this…… 1. Solve for d: 2. Solve for n: Mark the variable you are solving for. “Undo” the operation that “connects” the ‘d’ to the other numbers or variables. What operation connects the 5 to the c 2 and to the d? Multiplication – so what is it’s opposite? Division So divide both sides by everything in front of the d.

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If I’m solving for “w” I want all of my “w’s” on the LEFT side of the equal sign and all the “u’s” on the RIGHT…..so ISOLATE Now SOLVE for “w”. 3. Solve for w:

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If I’m solving for “u” I want all of my “u’s” on the LEFT side of the equal sign and all the “w’s” on the RIGHT…..so ISOLATE Now SOLVE for “u”. 4. Solve for u:

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5. Solve for A: Simplify – get rid of the parentheses then the fraction in this case. Now mark your variable and ISOLATE. And SOLVE for “A” 6. Solve for A:

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7. Solve for c: Simplify – get rid of the parentheses then the fraction in this case. Now mark your variable and ISOLATE. And SOLVE for “A” 8. Solve for b:

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9. Solve for h: 10. Solve for L:

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