Rule 4: More Than One Minus Sign in a Simple Fractions

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.

Example 1: Find the value of the fraction tex2html_wrap_inline54 .

Answer. The answer is tex2html_wrap_inline56 .

Example 2: Find the value of the fraction tex2html_wrap_inline58 .

Answer. The answer is tex2html_wrap_inline60 .

Example 3: Find the value of the fraction tex2html_wrap_inline62 .

Answer. The answer is tex2html_wrap_inline64 .

Example 4: Find the value of the expression tex2html_wrap_inline66 .

Answer. The answer is 12.

Example 4: Find the value of the expression tex2html_wrap_inline68 .

Answer. The answer is -15.

Example 4: Find the value of the expression tex2html_wrap_inline70 .

Answer. The answer is -48.

Work the following problems and click on Answer to check your results.

Problem 1: Find the value of the expression tex2html_wrap_inline72 .

Answer

Problem 2: Find the value of the expression tex2html_wrap_inline74 .

Answer

Problem 3: Find the value of the fraction tex2html_wrap_inline76 .

Answer

Problem 4: Find the value of the fraction tex2html_wrap_inline78 .

Answer

Problem 5: Find the value of the fraction tex2html_wrap_inline80 .

Answer

Problem 6: Find the value of the fraction tex2html_wrap_inline82 .

Answer

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