To divide two fractions you simply multiply the first fraction by the reciprocal of the second fraction.
For an explanation of multiplying fractions click here.
For example:
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It works the same way with variables:
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You have to be careful when dividing fractions that have polynomials for the numerator and denominator:
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Now using FOIL we can simplify the expression further:
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Now for the problem in the practice test it is easier to first factor the individual fractions:
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Now simplify:
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Now flip the fraction and multiply:
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By simplifying we get:
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And we are done.