Rule 17:
To build a fraction is the reverse of reducing the fraction. Instead of searching for the 1 in a fraction so that you can reduce, you insert a 1 and build.

Problem 4:
Create a fraction equivalent to tex2html_wrap_inline16 that has a denominator of 40.

There is no simple fraction with a denominator of 40 that is equivalent to the fraction. Answer is the fraction tex2html_wrap_inline16 .

The fraction tex2html_wrap_inline16 is already reduced. We need an integer that when multiplied by 7 will yield 40. There is no such integer.

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Author:Nancy Marcus

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