Rule 12: To multiply a whole number and a fraction, complete the following steps.
Problem 3: Multiply and reduce the answer.
Answer. Multiply the numerators and multiply the denominators, but leave them in factored form . Then reduce the fraction by factoring the numerator and the denominator and locate the fraction within the mix that has a value of 1. See the following steps:
The answer to the problem is .
You can check the answer with your calculator. Calculate 6 divided by 15, calculate 9 divided by 72, and multiply the results. Calculate 1 divided by 20. If the two answers are the same, you have worked the problem correctly.
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Author: Nancy Marcus