**Rule 4:****If there is an even number of minus signs in a fraction, the value of the fraction is positive.****If there is an odd number of minus signs in a simple fraction, the value of the fraction is negative.**

**Problem 2:**- Find the value of (-8)(-7).
**Answer:**- There is an even number of minus signs, so the answer is positive. The product of 8 and 7 is 56. The answer is 56.

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Author: NancyMarcus

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