Precalculus Examples

Add and to get .
Move all terms not containing to the right side of the equation.
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Since does not contain the variable to solve for, move it to the right side of the equation by subtracting from both sides.
Add and to get .
Remove the absolute value term. This creates a on the right side of the equation because .
Set up the positive portion of the solution.
Divide each term by and simplify.
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Divide each term in by .
Reduce the expression by cancelling the common factors.
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Cancel the common factor.
Divide by to get .
Divide by to get .
Set up the negative portion of the solution.
Divide each term by and simplify.
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Divide each term in by .
Reduce the expression by cancelling the common factors.
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Cancel the common factor.
Divide by to get .
Simplify the right side of the equation.
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Divide by to get .
Multiply by to get .
The solution to the equation includes both the positive and negative portions of the solution.
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