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How Do You Solve a Rational Equation With an Extraneous Solution?
Solve for t: 1/(t+3)+2/t=-3/t(t+3)
Summary
- Since -3 is one of the excluded values, our problem has no solution

Notes
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- Since our fractions have different denominators, we will need to find a common denominator in order to add them
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- We need to exclude all the values for t that will make any of our denominators equal to 0
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- We need to find a least common denominator so that we can add the fractions
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- We can multiply each fraction by something over itself to give them all the least common denominator
- Remember, anything over itself is just 1, so we're not changing the values of the fractions
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- Now that we have common denominators, we can just add the numerators
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- Since the denominators are equal, the numerators must be equal as well
- So we can just set the numerators equal to each other to make an equation we can solve for t
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- The answer we got for t, -3, is one of our excluded values
- Since -3 would make at least one of the denominators 0 in our original equation, it cannot be a solution
- Since we have no other solutions besides -3, this equation has no solution